Chocolate: Difference between revisions

Candies, milk chocolate
Nutritional value per 100 g (3.5 oz)
Energy	2,240 kJ (540 kcal)
Carbohydrates	59.4
Sugars	51.5
Dietary fiber	3.4 g
Fat	29.7
Protein	7.6
Vitamins
Vitamins and minerals
Vitamins	Quantity %DV†
Vitamin A	195 IU
Thiamine (B1)	8% 0.1 mg
Riboflavin (B2)	23% 0.3 mg
Niacin (B3)	3% 0.4 mg
Vitamin B6	0% 0.0 mg
Folate (B9)	3% 11 μg
Vitamin B12	29% 0.7 μg
Choline	8% 46.1 mg
Vitamin C	0% 0 mg
Vitamin E	3% 0.5 mg
Vitamin K	5% 5.7 μg
Minerals	Quantity %DV†
Calcium	15% 189 mg
Iron	13% 2.4 mg
Magnesium	15% 63 mg
Manganese	22% 0.5 mg
Phosphorus	17% 208 mg
Potassium	12% 372 mg
Selenium	8% 4.5 μg
Sodium	3% 79 mg
Zinc	21% 2.3 mg
Other constituents	Quantity
Water	1.5 g
Caffeine	20 mg
Cholesterol	23 mg
theobromine	205 mg
	Full Link to USDA Database entry
	†Percentages estimated using US recommendations for adults, except for potassium, which is estimated based on expert recommendation from the National Academies.

Chocolate
	Chocolate most commonly comes in dark, milk, and white varieties.
Main ingredients	Chocolate liquor, cocoa butter for white chocolate, often with added sugar
	Cookbook: Chocolate; Media: Chocolate;

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Chocolate is a typically sweet, usually brown, food preparation of roasted and ground cacao seeds. It is made in the form of a liquid, paste, or in a block, or used as a flavoring ingredient in other foods. The earliest evidence of use traces to the Olmecs (Mexico), with evidence of chocolate beverages dating to 1900 BC.^[1]^[2] The majority of Mesoamerican people made chocolate beverages, including the Maya and Aztecs.^[3]

The seeds of the cacao tree have an intense bitter taste and must be fermented to develop the flavor. After fermentation, the beans are dried, cleaned, and roasted. The shell is removed to produce cacao nibs, which are then ground to cocoa mass, unadulterated chocolate in rough form. Once the cocoa mass is liquefied by heating, it is called chocolate liquor. The liquor also may be cooled and processed into its two components: cocoa solids and cocoa butter. Baking chocolate, also called bitter chocolate, contains cocoa solids and cocoa butter in varying proportions, without any added sugar. Much of the chocolate consumed today is in the form of sweet chocolate, a combination of cocoa solids, cocoa butter or added vegetable oils, and sugar. Milk chocolate is sweet chocolate that additionally contains milk powder or condensed milk. White chocolate contains cocoa butter, sugar, and milk, but no cocoa solids.

Chocolate has become one of the most popular food types and flavors in the world, and a vast number of foodstuffs involving chocolate have been created, particularly desserts including cakes, pudding, mousse, chocolate brownies, and chocolate chip cookies. Many candies are filled with or coated with sweetened chocolate, and bars of solid chocolate and candy bars coated in chocolate are eaten as snacks. Gifts of chocolate molded into different shapes (e.g., eggs, hearts, coins) have become traditional on certain Western holidays, such as Easter, Valentine's Day, and Hanukkah. Chocolate is also used in cold and hot beverages such as chocolate milk and hot chocolate and in some alcoholic drinks, such as creme de cacao.

Although cocoa originated in the Americas, recent years have seen African nations assuming a leading role in producing cocoa. Since the 2000s, Western Africa produces almost two-thirds of the world's cocoa, with Ivory Coast growing almost half of that amount.

Etymology

Cacao, pronounced by the Olmecs as kakawa,^[1] dates to 1000 BC or earlier.^[1] The word "chocolate" entered the English language from Spanish in about 1600.^[4] The word entered Spanish from the word chocolātl in Nahuatl, the language of the Aztecs. The origin of the Nahuatl word is uncertain, as it does not appear in any early Nahuatl source, where the word for chocolate drink is cacahuatl, "cacao water". It is possible that the Spaniards coined the word (perhaps in order to avoid caca, a vulgar Spanish word for "faeces") by combining the Yucatec Mayan word chocol, "hot", with the Nahuatl word atl, "water".^[5] Another proposed etymology derives it from the word chicolatl, meaning "beaten drink", which may derive from the word for the frothing stick, chicoli.^[6] The term "chocolatier", for a chocolate confection maker, is attested from 1888.^[7]

History

Mesoamerican usage

Chocolate has been prepared as a drink for nearly all of its history. For example, one vessel found at an Olmec archaeological site on the Gulf Coast of Veracruz, Mexico, dates chocolate's preparation by pre-Olmec peoples as early as 1750 BC.^[8] On the Pacific coast of Chiapas, Mexico, a Mokaya archaeological site provides evidence of cacao beverages dating even earlier, to 1900 BC.^[9]^[8] The residues and the kind of vessel in which they were found indicate the initial use of cacao was not simply as a beverage, but the white pulp around the cacao beans was likely used as a source of fermentable sugars for an alcoholic drink.^[10]

An early Classic-period (460–480 AD) Mayan tomb from the site in Rio Azul had vessels with the Maya glyph for cacao on them with residue of a chocolate drink, suggests the Maya were drinking chocolate around 400 AD.^[11] Documents in Maya hieroglyphs stated chocolate was used for ceremonial purposes, in addition to everyday life.^[12] The Maya grew cacao trees in their backyards,^[13] and used the cacao seeds the trees produced to make a frothy, bitter drink.^[14]

By the 15th century, the Aztecs gained control of a large part of Mesoamerica and adopted cacao into their culture. They associated chocolate with Quetzalcoatl, who, according to one legend, was cast away by the other gods for sharing chocolate with humans,^[15] and identified its extrication from the pod with the removal of the human heart in sacrifice.^[16] In contrast to the Maya, who liked their chocolate warm, the Aztecs drank it cold, seasoning it with a broad variety of additives, including the petals of the Cymbopetalum penduliflorum tree, chile pepper, allspice, vanilla, and honey.

The Aztecs were not able to grow cacao themselves, as their home in the Mexican highlands was unsuitable for it, so chocolate was a luxury imported into the empire.^[15] Those who lived in areas ruled by the Aztecs were required to offer cacao seeds in payment of the tax they deemed "tribute".^[15] Cocoa beans were often used as currency.^[17] For example, the Aztecs used a system in which one turkey cost 100 cacao beans and one fresh avocado was worth three beans.^[18]

The Maya and Aztecs associated cacao with human sacrifice, and chocolate drinks specifically with sacrificial human blood.^[19]^[20] One of the first Spanish accounts of chocolate is by the royal chronicler Gonzalo Fernández de Oviedo, describing chocolate drink he had seen in Nicaragua in 1528, mixed with achiote (Bixa orellana): "because those people are fond of drinking human blood, to make this beverage seem like blood, they add a little achiote, so that it then turns red. ... and part of that foam is left on the lips and around the mouth, and when it is red for having achiote, it seems a horrific thing, because it seems like blood itself."^[20]

European adaptation

Until the 16th century, no European had ever heard of the popular drink from the Central American peoples.^[15] Christopher Columbus and his son Ferdinand encountered the cacao bean on Columbus's fourth mission to the Americas on 15 August 1502, when he and his crew seized a large native canoe that proved to contain cacao beans among other goods for trade.^[21] Spanish conquistador Hernán Cortés may have been the first European to encounter it, as the frothy drink was part of the after-dinner routine of Montezuma.^[11]^[22] Jose de Acosta, a Spanish Jesuit missionary who lived in Peru and then Mexico in the later 16th century, wrote of its growing influence on the Spaniards:

Loathsome to such as are not acquainted with it, having a scum or froth that is very unpleasant taste. Yet it is a drink very much esteemed among the Indians, where with they feast noble men who pass through their country. The Spaniards, both men and women that are accustomed to the country are very greedy of this Chocolate. They say they make diverse sorts of it, some hot, some cold, and some temperate, and put therein much of that "chili"; yea, they make paste thereof, the which they say is good for the stomach and against the catarrh.^[23]

While Columbus had taken cacao beans with him back to Spain,^[21] chocolate made no impact until Spanish friars introduced it to the Spanish court.^[15] After the Spanish conquest of the Aztecs, chocolate was imported to Europe. There, it quickly became a court favorite. It was still served as a beverage, but the Spanish added sugar, as well as honey, to counteract the natural bitterness.^[24] Vanilla was also a popular additive, with pepper and other spices sometimes used to give the illusion of a more potent vanilla flavor. Unfortunately, these spices had the tendency to unsettle the European constitution; the Encyclopédie states, "The pleasant scent and sublime taste it imparts to chocolate have made it highly recommended; but a long experience having shown that it could potentially upset one's stomach," which is why chocolate without vanilla was sometimes referred to as "healthy chocolate."^[25] By 1602, chocolate had made its way from Spain to Austria.^[26] By 1662, Pope Alexander VII had declared that religious fasts were not broken by consuming chocolate drinks. Within about a hundred years, chocolate established a foothold throughout Europe.^[15]

The new craze for chocolate brought with it a thriving slave market, as between the early 1600s and late 1800s, the laborious and slow processing of the cacao bean was manual.^[15] Cacao plantations spread, as the English, Dutch, and French colonized and planted. With the depletion of Mesoamerican workers, largely to disease, cacao production was often the work of poor wage laborers and African slaves. Wind-powered and horse-drawn mills were used to speed production, augmenting human labor. Heating the working areas of the table-mill, an innovation that emerged in France in 1732, also assisted in extraction.^[28]

New processes that sped the production of chocolate emerged early in the Industrial Revolution. In 1815, Dutch chemist Coenraad van Houten introduced alkaline salts to chocolate, which reduced its bitterness.^[15] A few years thereafter, in 1828, he created a press to remove about half the natural fat (cocoa butter or cacao butter) from chocolate liquor, which made chocolate both cheaper to produce and more consistent in quality. This innovation introduced the modern era of chocolate.^[21]

Known as "Dutch cocoa", this machine-pressed chocolate was instrumental in the transformation of chocolate to its solid form when, in 1847, English chocolatier Joseph Fry discovered a way to make chocolate moldable when he mixed the ingredients of cocoa powder and sugar with melted cocoa butter.^[24] Subsequently, his chocolate factory, Fry's of Bristol, England, began mass-producing chocolate bars, Fry's Chocolate Cream, launched in 1866, and they became very popular.^[27] Milk had sometimes been used as an addition to chocolate beverages since the mid-17th century, but in 1875 Swiss chocolatier Daniel Peter invented milk chocolate by mixing a powdered milk developed by Henri Nestlé with the liquor.^[15]^[21] In 1879, the texture and taste of chocolate was further improved when Rudolphe Lindt invented the conching machine.^[30]

Besides Nestlé, a number of notable chocolate companies had their start in the late 19th and early 20th centuries. Rowntree's of York set up and began producing chocolate in 1862, after buying out the Tuke family business. Cadbury was manufacturing boxed chocolates in England by 1868.^[15] In 1893, Milton S. Hershey purchased chocolate processing equipment at the World's Columbian Exposition in Chicago, and soon began the career of Hershey's chocolates with chocolate-coated caramels.

Types

Chocolate is commonly used as a coating for various fruits such as cherries and/or fillings, such as liqueurs

Several types of chocolate can be distinguished. Pure, unsweetened chocolate, often called "baking chocolate", contains primarily cocoa solids and cocoa butter in varying proportions. Much of the chocolate consumed today is in the form of sweet chocolate, which combines chocolate with sugar.

Milk

Milk chocolate is sweet chocolate that also contains milk powder or condensed milk. In the UK and Ireland, milk chocolate must contain a minimum of 20% total dry cocoa solids; in the rest of the European Union, the minimum is 25%.^[31] "White chocolate" contains cocoa butter, sugar, and milk, but no cocoa solids. Chocolate contains alkaloids such as theobromine and phenethylamine, which have physiological effects in humans, but the presence of theobromine renders it toxic to some animals, such as dogs and cats.^[32]

White

White chocolate, although similar in texture to that of milk and dark chocolate, does not contain any cocoa solids. Because of this, many countries do not consider white chocolate as chocolate at all.^[33]

Dark

Dark chocolate is produced by adding fat and sugar to the cacao mixture. The U.S. Food and Drug Administration calls this "sweet chocolate", and requires a 15% concentration of chocolate liquor. European rules specify a minimum of 35% cocoa solids.^[31] A higher amount of cocoa solids indicates more bitterness. Semisweet chocolate is a dark chocolate with a low sugar content. Bittersweet chocolate is chocolate liquor to which some sugar (typically a third), more cocoa butter and vanilla are added.^{[citation needed]} It has less sugar and more liquor than semisweet chocolate, but the two are interchangeable in baking. It is also known to last for two years if stored properly. As of 2017, there is no high-quality evidence that dark chocolate affects blood pressure significantly or provides other health benefits.^[34]

Unsweetened

Unsweetened chocolate is pure chocolate liquor, also known as bitter or baking chocolate. It is unadulterated chocolate: the pure, ground, roasted chocolate beans impart a strong, deep chocolate flavor. It is typically used in baking or other products to which sugar and other ingredients are added. Raw chocolate, often referred to as raw cacao, is always dark and a minimum of 75% cacao.

Poorly tempered or untempered chocolate may have whitish spots on the dark chocolate part, called chocolate bloom; it is an indication that sugar and/or fat has separated due to poor storage. It is not toxic and can be safely consumed.^[35]

Production

Roughly two-thirds of the entire world's cocoa is produced in West Africa, with 43% sourced from Ivory Coast,^[36] where, as of 2007^[update], child labor is a common practice to obtain the product.^[37]^[38] According to the World Cocoa Foundation, in 2007 some 50 million people around the world depended on cocoa as a source of livelihood.^[39] As of 2007^[update] in the UK, most chocolatiers purchase their chocolate from them, to melt, mold and package to their own design.^[40] According to the WCF's 2012 report, the Ivory Coast is the largest producer of cocoa in the world.^[41] The two main jobs associated with creating chocolate candy are chocolate makers and chocolatiers. Chocolate makers use harvested cacao beans and other ingredients to produce couverture chocolate (covering). Chocolatiers use the finished couverture to make chocolate candies (bars, truffles, etc.).^[42]

Production costs can be decreased by reducing cocoa solids content or by substituting cocoa butter with another fat. Cocoa growers object to allowing the resulting food to be called "chocolate", due to the risk of lower demand for their crops.^[39]

Genome

The sequencing in 2010 of the genome of the cacao tree may allow yields to be improved.^[43] Due to concerns about global warming effects on lowland climate in the narrow band of latitudes where cacao is grown (20 degrees north and south of the equator), the commercial company Mars, Incorporated and the University of California, Berkeley are conducting genomic research in 2017–18 to improve the survivability of cacao plants in hot climates.^[44]

Cacao varieties

Toasted cacao beans at a chocolate workshop at the La Chonita Hacienda in Tabasco

Chocolate is made from cocoa beans, the dried and fermented seeds of the cacao tree (Theobroma cacao), a small, 4–8 m tall (15–26 ft tall) evergreen tree native to the deep tropical region of the Americas. Recent genetic studies suggest the most common genotype of the plant originated in the Amazon basin and was gradually transported by humans throughout South and Central America. Early forms of another genotype have also been found in what is now Venezuela. The scientific name, Theobroma, means "food of the gods".^[45] The fruit, called a cacao pod, is ovoid, 15–30 cm (6–12 in) long and 8–10 cm (3–4 in) wide, ripening yellow to orange, and weighing about 500 g (1.1 lb) when ripe.

Cacao trees are small, understory trees that need rich, well-drained soils. They naturally grow within 20° of either side of the equator because they need about 2000 mm of rainfall a year, and temperatures in the range of 21 to 32 °C (70 to 90 °F). Cacao trees cannot tolerate a temperature lower than 15 °C (59 °F).^[46]

The three main varieties of cacao beans used in chocolate are criollo, forastero, and trinitario.

Criollo

Representing only 5% of all cocoa beans grown As of 2008^[update],^[47] criollo is the rarest and most expensive cocoa on the market, and is native to Central America, the Caribbean islands and the northern tier of South American states.^[48] The genetic purity of cocoas sold today as criollo is disputed, as most populations have been exposed to the genetic influence of other varieties.

Criollos are particularly difficult to grow, as they are vulnerable to a variety of environmental threats and produce low yields of cocoa per tree. The flavor of criollo is described as delicate yet complex, low in classic chocolate flavor, but rich in "secondary" notes of long duration.^[49]

Forastero

The most commonly grown bean is forastero,^[47] a large group of wild and cultivated cacaos, most likely native to the Amazon basin. The African cocoa crop is entirely of the forastero variety. They are significantly hardier and of higher yield than criollo. The source of most chocolate marketed,^[47] forastero cocoas are typically strong in classic "chocolate" flavor, but have a short duration and are unsupported by secondary flavors, producing "quite bland" chocolate.^[47]

Trinitario

Trinitario is a natural hybrid of criollo and forastero. Trinitario originated in Trinidad after an introduction of forastero to the local criollo crop. Nearly all cacao produced over the past five decades is of the forastero or lower-grade trinitario varieties.^[50]

Processing

Cacao pods are harvested by cutting them from the tree using a machete, or by knocking them off the tree using a stick. The beans with their surrounding pulp are removed from the pods and placed in piles or bins, allowing access to micro-organisms so fermentation of the pectin-containing material can begin. Yeasts produce ethanol, lactic acid bacteria produce lactic acid, and acetic acid bacteria produce acetic acid. The fermentation process, which takes up to seven days, also produces several flavor precursors, eventually resulting in the familiar chocolate taste.^[51]

It is important to harvest the pods when they are fully ripe, because if the pod is unripe, the beans will have a low cocoa butter content, or sugars in the white pulp will be insufficient for fermentation, resulting in a weak flavor. After fermentation, the beans must be quickly dried to prevent mold growth. Climate and weather permitting, this is done by spreading the beans out in the sun from five to seven days.^[52]

The dried beans are then transported to a chocolate manufacturing facility. The beans are cleaned (removing twigs, stones, and other debris), roasted, and graded. Next, the shell of each bean is removed to extract the nib. Finally, the nibs are ground and liquefied, resulting in pure chocolate in fluid form: chocolate liquor.^[53] The liquor can be further processed into two components: cocoa solids and cocoa butter.^[54]

Blending

Chocolate liquor is blended with the cocoa butter in varying quantities to make different types of chocolate or couvertures. The basic blends of ingredients for the various types of chocolate (in order of highest quantity of cocoa liquor first), are:

Dark chocolate: sugar, cocoa butter, cocoa liquor, and (sometimes) vanilla
Milk chocolate: sugar, cocoa butter, cocoa liquor, milk or milk powder, and vanilla
White chocolate: sugar, cocoa butter, milk or milk powder, and vanilla

Usually, an emulsifying agent, such as soy lecithin, is added, though a few manufacturers prefer to exclude this ingredient for purity reasons and to remain GMO-free, sometimes at the cost of a perfectly smooth texture. Some manufacturers are now using PGPR, an artificial emulsifier derived from castor oil that allows them to reduce the amount of cocoa butter while maintaining the same mouthfeel.

The texture is also heavily influenced by processing, specifically conching (see below). The more expensive chocolate tends to be processed longer and thus have a smoother texture and mouthfeel, regardless of whether emulsifying agents are added.

Different manufacturers develop their own "signature" blends based on the above formulas, but varying proportions of the different constituents are used. The finest, plain dark chocolate couvertures contain at least 70% cocoa (both solids and butter), whereas milk chocolate usually contains up to 50%. High-quality white chocolate couvertures contain only about 35% cocoa butter.

Producers of high-quality, small-batch chocolate argue that mass production produces bad-quality chocolate.^[47] Some mass-produced chocolate contains much less cocoa (as low as 7% in many cases), and fats other than cocoa butter. Vegetable oils and artificial vanilla flavor are often used in cheaper chocolate to mask poorly fermented and/or roasted beans.^[47]

In 2007, the Chocolate Manufacturers Association in the United States, whose members include Hershey, Nestlé, and Archer Daniels Midland, lobbied the Food and Drug Administration (FDA) to change the legal definition of chocolate to let them substitute partially hydrogenated vegetable oils for cocoa butter, in addition to using artificial sweeteners and milk substitutes.^[55] Currently, the FDA does not allow a product to be referred to as "chocolate" if the product contains any of these ingredients.^[56]^[57]

In the EU a product can be sold as chocolate if it contains up to 5% vegetable oil, and must be labelled as "family milk chocolate" rather than "milk chocolate" if it contains 20% milk.^[58]

According to Canadian Food and Drug Regulations,^[59] a "chocolate product" is a food product that is sourced from at least one "cocoa product" and contains at least one of the following: "chocolate, bittersweet chocolate, semi-sweet chocolate, dark chocolate, sweet chocolate, milk chocolate, or white chocolate". A "cocoa product" is defined as a food product that is sourced from cocoa beans and contains "cocoa nibs, cocoa liquor, cocoa mass, unsweetened chocolate, bitter chocolate, chocolate liquor, cocoa, low-fat cocoa, cocoa powder, or low-fat cocoa powder".

Conching

The penultimate process is called conching. A conche is a container filled with metal beads, which act as grinders. The refined and blended chocolate mass is kept in a liquid state by frictional heat. Chocolate prior to conching has an uneven and gritty texture. The conching process produces cocoa and sugar particles smaller than the tongue can detect, hence the smooth feel in the mouth. The length of the conching process determines the final smoothness and quality of the chocolate. High-quality chocolate is conched for about 72 hours, and lesser grades about four to six hours. After the process is complete, the chocolate mass is stored in tanks heated to about 45 to 50 °C (113 to 122 °F) until final processing.^[60]

Tempering

Video of cacao beans being ground and mixed with other ingredients to make chocolate at a Mayordomo store in Oaxaca

The final process is called tempering. Uncontrolled crystallization of cocoa butter typically results in crystals of varying size, some or all large enough to be clearly seen with the naked eye. This causes the surface of the chocolate to appear mottled and matte, and causes the chocolate to crumble rather than snap when broken.^[61]^[62] The uniform sheen and crisp bite of properly processed chocolate are the result of consistently small cocoa butter crystals produced by the tempering process.

The fats in cocoa butter can crystallize in six different forms (polymorphous crystallization).^[61]^[63] The primary purpose of tempering is to assure that only the best form is present. The six different crystal forms have different properties.

Crystal	Melting temp.	Notes
I	17 °C (63 °F)	Soft, crumbly, melts too easily
II	21 °C (70 °F)	Soft, crumbly, melts too easily
III	26 °C (79 °F)	Firm, poor snap, melts too easily
IV	28 °C (82 °F)	Firm, good snap, melts too easily
V	34 °C (93 °F)	Glossy, firm, best snap, melts near body temperature (37 °C)
VI	36 °C (97 °F)	Hard, takes weeks to form

Molten chocolate and a piece of a chocolate bar

As a solid piece of chocolate, the cocoa butter fat particles are in a crystalline rigid structure that gives the chocolate its solid appearance. Once heated, the crystals of the polymorphic cocoa butter are able to break apart from the rigid structure and allow the chocolate to obtain a more fluid consistency as the temperature increases – the melting process. When the heat is removed, the cocoa butter crystals become rigid again and come closer together, allowing the chocolate to solidify.^[64]

The temperature in which the crystals obtain enough energy to break apart from their rigid conformation would depend on the milk fat content in the chocolate and the shape of the fat molecules, as well as the form of the cocoa butter fat. Chocolate with a higher fat content will melt at a lower temperature.^[65]

Making chocolate considered "good" is about forming as many type V crystals as possible. This provides the best appearance and texture and creates the most stable crystals, so the texture and appearance will not degrade over time. To accomplish this, the temperature is carefully manipulated during the crystallization.

Generally, the chocolate is first heated to 45 °C (113 °F) to melt all six forms of crystals.^[61]^[63] Next, the chocolate is cooled to about 27 °C (81 °F), which will allow crystal types IV and V to form. At this temperature, the chocolate is agitated to create many small crystal "seeds" which will serve as nuclei to create small crystals in the chocolate. The chocolate is then heated to about 31 °C (88 °F) to eliminate any type IV crystals, leaving just type V. After this point, any excessive heating of the chocolate will destroy the temper and this process will have to be repeated. However, other methods of chocolate tempering are used. The most common variant is introducing already tempered, solid "seed" chocolate. The temper of chocolate can be measured with a chocolate temper meter to ensure accuracy and consistency. A sample cup is filled with the chocolate and placed in the unit which then displays or prints the results.

Two classic ways of manually tempering chocolate are:

Working the molten chocolate on a heat-absorbing surface, such as a stone slab, until thickening indicates the presence of sufficient crystal "seeds"; the chocolate is then gently warmed to working temperature.
Stirring solid chocolate into molten chocolate to "inoculate" the liquid chocolate with crystals (this method uses the already formed crystals of the solid chocolate to "seed" the molten chocolate).

Chocolate tempering machines (or temperers) with computer controls can be used for producing consistently tempered chocolate. In particular continuous tempering machines are used in large volume applications. Various methods and apparatuses for continuous flow tempering have been described by Aasted, Sollich and Buhler, three manufacturers of commercial chocolate equipment, with a focus now on energy efficiency. In general, molten chocolate coming in at 40–50 °C is cooled in heat exchangers to crystallization temperates of about 26–30 °C, passed through a tempering column consisting of spinning plates to induce shear, then warmed slightly to re-melt undesirable crystal formations.^[66]^[67]

Storage

Chocolate is very sensitive to temperature and humidity. Ideal storage temperatures are between 15 and 17 °C (59 and 63 °F), with a relative humidity of less than 50%. If refrigerated or frozen without containment, chocolate can absorb enough moisture to cause a whitish discoloration, the result of fat or sugar crystals rising to the surface. Various types of "blooming" effects can occur if chocolate is stored or served improperly.^[68]

Chocolate bloom is caused by storage temperature fluctuating or exceeding 24 °C (75 °F), while sugar bloom is caused by temperature below 15 °C (59 °F) or excess humidity. To distinguish between different types of bloom, one can rub the surface of the chocolate lightly, and if the bloom disappears, it is fat bloom. Moving chocolate between temperature extremes, can result in an oily texture. Although visually unappealing, chocolate suffering from bloom is safe for consumption and taste unaffected.^[69]^[70]^[71] Bloom can be reversed by retempering the chocolate or using it for any use that requires melting the chocolate.^[72]

Chocolate is generally stored away from other foods, as it can absorb different aromas. Ideally, chocolates are packed or wrapped, and placed in proper storage with the correct humidity and temperature. Additionally, chocolate is frequently stored in a dark place or protected from light by wrapping paper. The glossy shine, snap, aroma, texture, and taste of the chocolate can show the quality and if it was stored well.^[73]

Composition

Nutrition

A 100-gram serving of milk chocolate supplies 540 calories. It is 59% carbohydrates (52% as sugar and 3% as dietary fiber), 30% fat and 8% protein (table). Approximately 65% of the fat in milk chocolate is saturated, mainly palmitic acid and stearic acid, while the predominant unsaturated fat is oleic acid (table, see USDA reference for full report).

100-grams of milk chocolate is an excellent source (over 19% of the Daily Value, DV) of riboflavin, vitamin B12 and the dietary minerals, manganese, phosphorus and zinc. Chocolate is a good source (10–19% DV) of calcium, magnesium and iron.

Effects on health

Chocolate may be a factor for heartburn in some people because one of its constituents, theobromine, may affect the esophageal sphincter muscle in a way that permits stomach acids to enter the esophagus.^[76] Theobromine poisoning is an overdosage reaction to the bitter alkaloid, which happens more frequently in domestic animals than humans. However, daily intake of 50-100 g cocoa (0.8-1.5 g theobromine) by humans has been associated with sweating, trembling and severe headache.^[77]

Chocolate and cocoa contain moderate to high amounts of oxalate,^[78]^[79] which may increase someone's risk for kidney stones.^[80] During cultivation and production, chocolate may absorb the heavy metal lead from the environment,^[81] but the total amounts typically eaten are less than the tolerable daily limit for lead consumption, according to a World Health Organization report from 2010.^[82] However, reports from 2014 indicate that "chocolate might be a significant source" of lead ingestion for children if consumption is high,^[83]^[84] and "one 10 g cube of dark chocolate may contain as much as 20% of the daily lead oral limit."^[83]

A few studies have documented allergic reactions from chocolate in children.^[76] Other research has shown that dark chocolate can aggravate acne in men who are prone to it.^[85] Research has also shown that consuming dark chocolate does not substantially affect blood pressure.^[34] Chocolate and cocoa are under preliminary research to determine if consumption affects the risk of certain cardiovascular diseases^[86] or cognitive abilities.^[87]

A one-tablespoon serving of dry unsweetened cocoa powder has 12.1 mg of caffeine^[88] and a 25-g single serving of dark chocolate has 22.4 mg of caffeine.^[89] Although a single 7 oz. serving of coffee may contain 80–175 mg,^[90] studies have shown psychoactive effects in caffeine doses as low as 9 mg,^[91] and a dose as low as 12.5 mg was shown to have effects on cognitive performance.^[92]

Excessive consumption of large quantities of any energy-rich food, such as chocolate, without a corresponding increase in activity to expend the associated calories, can cause weight gain and possibly lead to obesity.^[76] Raw chocolate is high in cocoa butter, a fat which is removed during chocolate refining and then added back in varying proportions during the manufacturing process. Manufacturers may add other fats, sugars, and milk, all of which increase the caloric content of chocolate.^[76]

Phytochemicals

Cocoa contains certain phytochemicals. Cocoa solids are a source of flavonoids^[93] and alkaloids, such as theobromine, phenethylamine, and caffeine.^[94]

Labeling

Some manufacturers provide the percentage of chocolate in a finished chocolate confection as a label quoting percentage of "cocoa" or "cacao". It should be noted that this refers to the combined percentage of both cocoa solids and cocoa butter in the bar, not just the percentage of cocoa solids.^[95] The Belgian AMBAO certification mark indicates that no non-cocoa vegetable fats have been used in making the chocolate.^[96]^[97]

Chocolates that are organic^[98] or fair trade certified^[99] carry labels accordingly.

In the United States, some large chocolate manufacturers lobbied the federal government to permit confections containing cheaper hydrogenated vegetable oil in place of cocoa butter to be sold as "chocolate". In June 2007, as a response to consumer concern after the proposed change, the FDA reiterated "Cacao fat, as one of the signature characteristics of the product, will remain a principal component of standardized chocolate."^[100]

Industry

The chocolate industry is a steadily growing, $50 billion-a-year worldwide business centered on the sale and consumption of chocolate. It is prevalent throughout most of the world.^[101] Europe accounts for 45% of the world's chocolate revenue^[102] and the US$20 billion.^[103] Big Chocolate is the grouping of major international chocolate companies in Europe and the U.S. The U.S. companies, such as Mars and Hershey's alone, generate $13 billion a year in chocolate sales and account for two-thirds of U.S. production.^[104] Despite the expanding reach of the chocolate industry internationally, cocoa farmers and labourers in the Ivory Coast are unaware of the uses of the beans. The high cost of chocolate in the Ivory Coast also means that it is inaccessible to the majority of the population, who are unaware of what it tastes like.^[105]

Manufacturers

Chocolate manufacturers produce a range of products from chocolate bars to fudge. Large manufacturers of chocolate products include Cadbury (the world's largest confectionery manufacturer), Ferrero, Guylian, The Hershey Company, Lindt & Sprüngli, Mars, Incorporated, Milka, Neuhaus and Suchard.

Guylian is best known for its chocolate sea shells; Cadbury for its Dairy Milk and Creme Egg. The Hershey Company, the largest chocolate manufacturer in North America, produces the Hershey Bar and Hershey's Kisses.^[106] Mars Incorporated, a large privately owned U.S. corporation, produces Mars Bar, Milky Way, M&M's, Twix, and Snickers. Lindt is known for its truffle balls and gold foil-wrapped Easter bunnies.

Food conglomerates Nestlé SA and Kraft Foods both have chocolate brands. Nestlé acquired Rowntree's in 1988 and now markets chocolates under their own brand, including Smarties (a chocolate candy) and Kit Kat (a candy bar); Kraft Foods through its 1990 acquisition of Jacobs Suchard, now owns Milka and Suchard. In February 2010, Kraft also acquired British-based Cadbury.;^[107] Fry's, Trebor Basset and the fair trade brand Green & Black's also belongs to the group.

Human trafficking of child labourers

The widespread use of children in cocoa production is controversial, not only for the concerns about child labor and exploitation, but also because up to 12,000 of the 200,000 children working in Côte d'Ivoire, the world's biggest producer of cocoa,^[108] may be victims of trafficking or slavery.^[109] Most attention on this subject has focused on West Africa, which collectively supplies 69 percent of the world's cocoa,^[110] and Côte d'Ivoire in particular, which supplies 35 percent of the world's cocoa.^[110] Thirty percent of children under age 15 in sub-Saharan Africa are child laborers, mostly in agricultural activities including cocoa farming.^[111] It is estimated that more than 1.8 million children in West Africa are involved in growing cocoa.^[112] Major chocolate producers, such as Nestlé, buy cocoa at commodities exchanges where Ivorian cocoa is mixed with other cocoa.^[113]

In 2009, Salvation Army International Development (SAID) UK stated that 12,000 children have been trafficked on cocoa farms in the Ivory Coast of Africa, where half of the world's chocolate is made.^[114] SAID UK states that it is these child slaves who are likely to be working in "harsh and abusive"^[115] conditions for the production of chocolate,^[114] and an increasing number of health-food^[116] and anti-slavery^[117] organisations are now highlighting and campaigning against the use of trafficking in the chocolate industry.

Fair trade

In the 2000s, some chocolate producers began to engage in fair trade initiatives, to address concerns about the marginalization of cocoa laborers in developing countries. Traditionally, Africa and other developing countries received low prices for their exported commodities such as cocoa, which caused poverty to abound. Fair trade seeks to establish a system of direct trade from developing countries to counteract this unfair system.^[118] One solution for fair labor practices is for farmers to become part of an Agricultural cooperative. Cooperatives pay farmers a fair price for their cocoa so farmers have enough money for food, clothes, and school fees.^[119] One of the main tenets of fair trade is that farmers receive a fair price, but this does not mean that the larger amount of money paid for fair trade cocoa goes directly to the farmers. The effectiveness of fair trade has been questioned. In a 2014 article, The Economist stated that workers on fair trade farms have a lower standard of living than on similar farms outside the fair trade system.^[120]

Usage and consumption

Bars

Chocolate is sold in chocolate bars, which come in dark chocolate, milk chocolate and white chocolate varieties. Some bars that are mostly chocolate have other ingredients blended into the chocolate, such as nuts, raisins or crisped rice. Chocolate is used as an ingredient in a huge variety of candy bars, which typically contain various confectionary ingredients (e.g., nougat, wafers, caramel, nuts, etc.) which are coated in chocolate.

Coating and filling

Chocolate is used as a flavouring product in many desserts, such as chocolate cakes, chocolate brownies, chocolate mousse and chocolate chip cookies. Numerous types of candy and snacks contain chocolate, either as a filling (e.g., M&M's) or as a coating (e.g., chocolate-coated raisins or chocolate-coated peanuts).

Beverages

Some non-alcoholic beverages contain chocolate, such as chocolate milk, hot chocolate and chocolate milkshakes. Some alcoholic liqueurs are flavoured with chocolate, such as chocolate liqueur and creme de cacao. Chocolate is a popular flavour of ice cream and pudding, and chocolate sauce is a commonly added as a topping on ice cream sundaes.

Popular culture

Religious and cultural links

Chocolatier preparing Easter eggs and rabbits

Chocolate is associated with festivals such as Easter, when moulded chocolate rabbits and eggs are traditionally given in Christian communities, and Hanukkah, when chocolate coins are given in Jewish communities. Chocolate hearts and chocolate in heart-shaped boxes are popular on Valentine's Day and are often presented along with flowers and a greeting card. In 1868, Cadbury created Fancy Boxes – a decorated box of chocolates – in the shape of a heart for Valentine's Day.^[27] Boxes of filled chocolates quickly became associated with the holiday.^[27] Chocolate is an acceptable gift on other holidays and on occasions such as birthdays.

Many confectioners make holiday-specific chocolate candies. Chocolate Easter eggs or rabbits and Santa Claus figures are two examples. Such confections can be solid, hollow, or filled with sweets or fondant.

Books and film

Chocolate has been the center of several successful book and film adaptations.

Charlie and the Chocolate Factory

In 1964, Roald Dahl published a children's novel titled Charlie and the Chocolate Factory. The novel centers on a poor boy named Charlie Bucket who takes a tour through the greatest chocolate factory in the world, owned by Willy Wonka. Two film adaptations of the novel were produced. The first was Willy Wonka & the Chocolate Factory, a 1971 film which later became a cult classic, and spawned the real world Willy Wonka Candy Company, which produces chocolate products to this day. Thirty-four years later, a second film adaptation was produced, titled Charlie and the Chocolate Factory. The 2005 film was very well received by critics^[121] and was one of the highest-grossing films that year, earning over US$470,000,000 worldwide.^[122] Charlie and the Chocolate Factory was also recognized at the 78th Academy Awards, where it was nominated for Best Costume Design for Gabriella Pesucci.^[123]

Like Water for Chocolate

Like Water for Chocolate (Como agua para chocolate), a 1989 love story by novelist Laura Esquivel, was adapted to film in 1992. The plot incorporates magical realism with Mexican cuisine, and the title is a double entendre in its native language, referring both to a recipe for hot chocolate and to an idiom that is a metaphor for sexual arousal. The film earned 11 Ariel Awards from the Academia Mexicana de Artes y Ciencias Cinematográficas, including Best Picture.

Chocolat

Chocolat, a 1999 novel by Joanne Harris, tells the story of Vianne Rocher, a young mother, whose confections change the lives of the townspeople. The 2000 film adaptation, Chocolat, also proved successful, grossing over US$150,000,000 worldwide,^[124] and receiving Academy Award and Golden Globe nominations for Best Picture, Best Actress, and Best Original Score.^[125]^[126]

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External links

Chisholm, Hugh, ed. (1911). "Chocolate" . Encyclopædia Britannica (11th ed.). Cambridge University Press.
Chocolate Tempering
"Chocolate and Tea", American Enterprise Exhibition, National Museum of American History (exhibit on 18th century American trade)

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[accuses_companies-108] Hawksley, Humphrey (4 May 2001). "Ivory Coast accuses chocolate companies". BBC News. Archived from the original on 14 January 2009. Retrieved 4 August 2010. {{cite news}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[combating-109] "Combating Child Labour in Cocoa Growing" (PDF). International Labour Organization. 2005. Archived from the original (PDF) on 30 June 2012. Retrieved 26 April 2012. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[WCF_2010_update-110] "Cocoa Market Update" (PDF). World Cocoa Foundation. May 2010. Archived from the original (PDF) on 13 October 2011. Retrieved 11 December 2011. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[rooting-111] "Rooting out child labour from cocoa farms: Paper No. 4 Child labour monitoring – A partnership of communities and government". International Labour Organization. 2007. Archived from the original on 2 April 2016. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[112] "Final Report on the Status of Public and Private Efforts to Eliminate the Worst Forms of Child Labor (WFCL) in the Cocoa Sectors of Côte d'Ivoire and Ghana." Archived 12 April 2012 at the Wayback Machine p. 7. Tulane University. 31 March 2011.

[oxfam-113] "The cocoa market: A background study" (PDF). Oxfam. 2002. Archived from the original (PDF) on 10 September 2008. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[Modern_Slavery_section-114] "International Development: Human Trafficking". Salvation Army. Archived from the original on 22 July 2014. Retrieved 16 July 2014. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[Human_Trafficking_–_Promises-115] Salvation Army International Development (SAID) UK (2009). "Human Trafficking – Promises Archived 10 July 2014 at the Wayback Machine."

[116] "Slavery in the chocolate industry". Food Empowerment Project. Archived from the original on 12 July 2014. Retrieved 16 July 2014. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[117] "Act now to end child slavery in the chocolate industry". Anti-slavery: Today's fight for tomorrow's freedom. Archived from the original on 20 July 2014. Retrieved 16 July 2014. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[118] Brown, Michael Barratt (2007). "'Fair Trade' with Africa". Review of African Political Economy. 34 (112): 267–77. doi:10.1080/03056240701449653. JSTOR 20406397.

[119] Goodman, Michael K (2004). "Reading fairtrade: political ecological imaginary and the moral economy of fairtrade foods". Political Geography. 23 (7): 891–915. doi:10.1016/j.polgeo.2004.05.013.

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[121] "Charlie and the Chocolate Factory". Rotten Tomatoes. Archived from the original on 8 May 2008. Retrieved 29 May 2008. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

[box-122] "Charlie and the Chocolate Factory". Box Office Mojo. Archived from the original on 16 December 2008. Retrieved 29 May 2008. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

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[125] "Chocolat". Academy Awards database. Academy of Motion Picture Arts and Sciences. Archived from the original on 26 November 2017. Retrieved 21 June 2017. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

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@@ Line 32: / Line 32: @@
 [[File:Kakaw (Mayan word).png|thumb|[[Maya script|Maya glyph]] for cacao]]
-Cacao, pronounced by the Olmecs as ''kakawa'',<ref name=powis/> dates to 1000&nbsp;BC or earlier.<ref name=powis/> The word "chocolate" entered the English language from Spanish in about 1600.<ref name=heritagedictionary>{{cite book |chapter=chocolate |title=The American Heritage Dictionary |chapter-url=http://www.bartleby.com/61/68/C0316800.html |archiveurl=https://web.archive.org/web/20080517202741/http://www.bartleby.com/61/68/C0316800.html |archivedate=17 May 2008 |accessdate=9 May 2009}}</ref> The word entered Spanish from the word ''chocolātl'' in [[Nahuatl]], the language of the Aztecs. The origin of the Nahuatl word is uncertain, as it does not appear in any early Nahuatl source, where the word for chocolate drink is ''cacahuatl'', "cacao water". It is possible that the Spaniards coined the word (perhaps in order to avoid ''caca'', a vulgar Spanish word for "faeces") by combining the Yucatec Mayan word ''chocol'', "hot", with the Nahuatl word ''atl'', "water".{{sfnp|Coe|Coe|2013|pp=121–123}} Another proposed etymology derives it from the word ''chicolatl'', meaning "beaten drink", which may derive from the word for the frothing stick, ''chicoli''.<ref>{{Cite journal|doi=10.1017/S0956536100111058|title=Cacao and Chocolate: A Uto-Aztecan perspective |year=2000 |last1=Dakin |first1=Karen |last2=Wichmann |first2=Søren |journal=Ancient Mesoamerica |volume=11 |issue=1 |pages=55–75 |url=https://www.researchgate.net/profile/Karen_Dakin/publication/231965433_CACAO_AND_CHOCOLATE/links/02bfe5125b31c29bf1000000/CACAO-AND-CHOCOLATE.pdf |accessdate=10 January 2018}}</ref> The term "[[chocolatier]]", for a chocolate confection maker, is attested from 1888.<ref name="etymonline.com">{{OEtymD|chocolate}}</ref>
+Cacao, pronounced by the Olmecs as ''kakawa'',<ref name=powis/> dates to 1000&nbsp;BC or earlier.<ref name=powis/> The word "chocolate" entered the English language from Spanish in about 1600.<ref name=heritagedictionary>{{cite book |chapter=chocolate |title=The American Heritage Dictionary |chapter-url=http://www.bartleby.com/61/68/C0316800.html |archiveurl=https://web.archive.org/web/20080517202741/http://www.bartleby.com/61/68/C0316800.html |archivedate=17 May 2008 |accessdate=9 May 2009}}</ref> The word entered Spanish from the word ''chocolātl'' in [[Nahuatl]], the language of the Aztecs. The origin of the Nahuatl word is uncertain, as it does not appear in any early Nahuatl source, where the word for chocolate drink is ''cacahuatl'', "cacao water". It is possible that the Spaniards coined the word (perhaps in order to avoid ''caca'', a vulgar Spanish word for "faeces") by combining the Yucatec Mayan word ''chocol'', "hot", with the Nahuatl word ''atl'', "water".{{sfnp|Coe|Coe|2013|pp=121–123}} Another proposed etymology derives it from the word ''chicolatl'', meaning "beaten drink", which may derive from the word for the frothing stick, ''chicoli''.<ref>{{Cite journal|doi=10.1017/S0956536100111058|title=Cacao and Chocolate: A Uto-Aztecan perspective |year=2000 |last1=Dakin |first1=Karen |last2=Wichmann |first2=Søren |journal=Ancient Mesoamerica |volume=11 |issue=1 |pages=55–75 |url=https://www.researchgate.net/publication/231965433 |accessdate=10 January 2018}}</ref> The term "[[chocolatier]]", for a chocolate confection maker, is attested from 1888.<ref name="etymonline.com">{{OEtymD|chocolate}}</ref>
 ==History==
@@ Line 43: / Line 43: @@
 [[File:Aztec. Man Carrying a Cacao Pod, 1440-1521.jpg|thumb|upright|Aztec. ''Man Carrying a Cacao Pod'', 1440–1521. Volcanic stone, traces of red pigment. [[Brooklyn Museum]]]]
-An early Classic-period (460–480 AD) Mayan tomb from the site in Rio Azul had vessels with the [[Maya script|Maya glyph]] for cacao on them with residue of a chocolate drink, suggests the Maya were drinking chocolate around 400&nbsp;AD.<ref name="Riches">{{Cite book|last=Burleigh|first=Robert|title=Chocolate: Riches from the Rainforest|publisher=Harry N. Abrams, Ins., Publishers|year=2002|isbn=0-8109-5734-5}}</ref> Documents in Maya hieroglyphs stated chocolate was used for ceremonial purposes, in addition to everyday life.<ref>{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican5.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Using Chocolate |publisher=[[Field Museum]] |accessdate=23 November 2011}}</ref> The Maya grew cacao trees in their backyards,<ref name="mayanrule">{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican3.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Obtaining Cacao |publisher=[[Field Museum]] |accessdate=2 June 2008}}</ref> and used the cacao seeds the trees produced to make a frothy, bitter drink.<ref>{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican4.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Making Chocolate |publisher=[[Field Museum]] |accessdate=2 June 2008}}</ref>
+An early Classic-period (460–480 AD) Mayan tomb from the site in Rio Azul had vessels with the [[Maya script|Maya glyph]] for cacao on them with residue of a chocolate drink, suggests the Maya were drinking chocolate around 400&nbsp;AD.<ref name="Riches">{{Cite book|last=Burleigh|first=Robert|title=Chocolate: Riches from the Rainforest|publisher=Harry N. Abrams, Ins., Publishers|year=2002|isbn=978-0-8109-5734-3}}</ref> Documents in Maya hieroglyphs stated chocolate was used for ceremonial purposes, in addition to everyday life.<ref>{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican5.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Using Chocolate |publisher=[[Field Museum]] |accessdate=23 November 2011}}</ref> The Maya grew cacao trees in their backyards,<ref name="mayanrule">{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican3.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Obtaining Cacao |publisher=[[Field Museum]] |accessdate=2 June 2008}}</ref> and used the cacao seeds the trees produced to make a frothy, bitter drink.<ref>{{cite web |url=http://archive.fieldmuseum.org/Chocolate/history_mesoamerican4.html |title=Chocolate: A Mesoamerican Luxury 250–900 C.E. (A.D.) – Making Chocolate |publisher=[[Field Museum]] |accessdate=2 June 2008}}</ref>
 By the 15th century, the Aztecs gained control of a large part of Mesoamerica and adopted cacao into their culture. They associated chocolate with [[Quetzalcoatl]], who, according to one legend, was cast away by the other gods for sharing chocolate with humans,<ref name="kerr"/> and identified its extrication from the pod with the removal of the human heart in sacrifice.<ref>{{cite news | url = https://www.telegraph.co.uk/foodanddrink/6194447/Aztecs-and-cacao-the-bittersweet-past-of-chocolate.html | title = Aztecs and Cacao: the bittersweet past of chocolate | work = The Daily Telegraph | date = 15 September 2009 | accessdate = 8 March 2014 | deadurl = no | archiveurl = https://web.archive.org/web/20140418180336/http://www.telegraph.co.uk/foodanddrink/6194447/Aztecs-and-cacao-the-bittersweet-past-of-chocolate.html | archivedate = 18 April 2014 | df = dmy-all }}</ref> In contrast to the Maya, who liked their chocolate warm, the Aztecs drank it cold, seasoning it with a broad variety of additives, including the petals of the ''[[Cymbopetalum penduliflorum]]'' tree, [[chile pepper]], [[allspice]], [[vanilla]], and [[honey]].
-The Aztecs were not able to grow cacao themselves, as their home in the Mexican highlands was unsuitable for it, so chocolate was a luxury imported into the empire.<ref name="kerr"/> Those who lived in areas ruled by the Aztecs were required to offer cacao seeds in payment of the tax they deemed "tribute".<ref name="kerr">{{cite web |url=http://archive.fieldmuseum.org/chocolate/history.html |title=History of Chocolate |publisher=[[Field Museum]] |accessdate=3 March 2014}}</ref> Cocoa beans were often used as currency.<ref>{{Cite news |url=http://findarticles.com/p/articles/mi_m1310/is_1990_Jan/ai_8560999 |archive-url=https://archive.is/20120527012838/http://findarticles.com/p/articles/mi_m1310/is_1990_Jan/ai_8560999 |dead-url=yes |archive-date=27 May 2012 |title=When cocoa was used as currency – pre-Columbian America – The Fortunes of Money |last=Peniche Rivero |first=Piedad |accessdate=26 June 2008 |publisher=[[UNESCO Courier]] |year=1990}}</ref> For example, the Aztecs used a system in which one turkey cost 100 cacao beans and one fresh [[avocado]] was worth three beans.<ref>{{cite web|first=Bill|last=Buford|url=http://www.newyorker.com/reporting/2007/10/29/071029fa_fact_buford|title=Notes of a Gastronome: Extreme Chocolate|work=The New Yorker|date=29 October 2007|accessdate=17 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20080616173209/http://www.newyorker.com/reporting/2007/10/29/071029fa_fact_buford|archivedate=16 June 2008}}</ref>
+The Aztecs were not able to grow cacao themselves, as their home in the Mexican highlands was unsuitable for it, so chocolate was a luxury imported into the empire.<ref name="kerr"/> Those who lived in areas ruled by the Aztecs were required to offer cacao seeds in payment of the tax they deemed "tribute".<ref name="kerr">{{cite web |url=http://archive.fieldmuseum.org/chocolate/history.html |title=History of Chocolate |publisher=[[Field Museum]] |accessdate=3 March 2014}}</ref> Cocoa beans were often used as currency.<ref>{{Cite news |url=http://findarticles.com/p/articles/mi_m1310/is_1990_Jan/ai_8560999 |archive-url=https://archive.is/20120527012838/http://findarticles.com/p/articles/mi_m1310/is_1990_Jan/ai_8560999 |dead-url=yes |archive-date=27 May 2012 |title=When cocoa was used as currency – pre-Columbian America – The Fortunes of Money |last=Peniche Rivero |first=Piedad |accessdate=26 June 2008 |publisher=[[UNESCO Courier]] |year=1990}}</ref> For example, the Aztecs used a system in which one turkey cost 100 cacao beans and one fresh [[avocado]] was worth three beans.<ref>{{cite web|first=Bill|last=Buford|url=http://www.newyorker.com/reporting/2007/10/29/071029fa_fact_buford|title=Notes of a Gastronome: Extreme Chocolate|website=The New Yorker|date=29 October 2007|accessdate=17 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20080616173209/http://www.newyorker.com/reporting/2007/10/29/071029fa_fact_buford|archivedate=16 June 2008}}</ref>
 The Maya and Aztecs associated cacao with [[human sacrifice]], and chocolate drinks specifically with sacrificial human [[blood]].{{sfnp|Coe|Coe|2013|p=46}}{{sfnp|Chinchilla Mazariegos|2016|p=361}}
@@ Line 56: / Line 56: @@
 [[File:Pietro Longhi La cioccolata del mattino The Morning Chocolate 1775-1780.jpg|right|thumb|upright|Chocolate soon became a fashionable drink of the European nobility after the discovery of the Americas. ''The morning chocolate'' by [[Pietro Longhi]]; Venice, 1775–1780]]
-Until the 16th century, no European had ever heard of the popular drink from the [[Central America]]n peoples.<ref name="kerr"/> [[Christopher Columbus]] and his son [[Ferdinand Columbus|Ferdinand]] encountered the cacao bean on Columbus's fourth mission to the Americas on 15 August 1502, when he and his crew seized a large native canoe that proved to contain cacao beans among other goods for trade.<ref name=Exploratorium>{{cite journal| url=http://www.exploratorium.edu/exploring/exploring_chocolate/| title=The Sweet Lure of Chocolate| first=Jim| last=Spadaccini| accessdate=3 March 2014| work=[[Exploratorium]]| deadurl=no| archiveurl=https://web.archive.org/web/20140314112753/http://www.exploratorium.edu/exploring/exploring_chocolate/| archivedate=14 March 2014| df=dmy-all}}</ref> Spanish [[conquistador]] [[Hernán Cortés]] may have been the first European to encounter it, as the frothy drink was part of the after-dinner routine of [[Montezuma II|Montezuma]].<ref name="Riches" /><ref>{{Cite book|last=Solís y Ribadeneyra|first=Antonio de|authorlink=Antonio de Solís|translator=Thomas Townsend|title=The History of the Conquest of Mexico by the Spaniards, done into English by Thomas Townsend|date=1685 |location=London|chapter=Book III Chapter XV|pages=336–38}}</ref> [[Jose de Acosta]], a Spanish [[Society of Jesus|Jesuit]] missionary who lived in Peru and then Mexico in the later 16th century, wrote of its growing influence on the Spaniards:
+Until the 16th century, no European had ever heard of the popular drink from the [[Central America]]n peoples.<ref name="kerr"/> [[Christopher Columbus]] and his son [[Ferdinand Columbus|Ferdinand]] encountered the cacao bean on Columbus's fourth mission to the Americas on 15 August 1502, when he and his crew seized a large native canoe that proved to contain cacao beans among other goods for trade.<ref name=Exploratorium>{{cite journal| url=http://www.exploratorium.edu/exploring/exploring_chocolate/| title=The Sweet Lure of Chocolate| first=Jim| last=Spadaccini| accessdate=3 March 2014| journal=[[Exploratorium]]| deadurl=no| archiveurl=https://web.archive.org/web/20140314112753/http://www.exploratorium.edu/exploring/exploring_chocolate/| archivedate=14 March 2014| df=dmy-all}}</ref> Spanish [[conquistador]] [[Hernán Cortés]] may have been the first European to encounter it, as the frothy drink was part of the after-dinner routine of [[Montezuma II|Montezuma]].<ref name="Riches" /><ref>{{Cite book|last=Solís y Ribadeneyra|first=Antonio de|authorlink=Antonio de Solís|translator=Thomas Townsend|title=The History of the Conquest of Mexico by the Spaniards, done into English by Thomas Townsend|date=1685 |location=London|chapter=Book III Chapter XV|pages=336–38}}</ref> [[Jose de Acosta]], a Spanish [[Society of Jesus|Jesuit]] missionary who lived in Peru and then Mexico in the later 16th century, wrote of its growing influence on the Spaniards:
 <blockquote>Loathsome to such as are not acquainted with it, having a scum or froth that is very unpleasant taste. Yet it is a drink very much esteemed among the Indians, where with they feast noble men who pass through their country. The Spaniards, both men and women that are accustomed to the country are very greedy of this Chocolate. They say they make diverse sorts of it, some hot, some cold, and some temperate, and put therein much of that "chili"; yea, they make paste thereof, the which they say is good for the stomach and against the [[catarrh]].<ref>[https://www.sfu.ca/geog351fall03/groups-webpages/gp8/history/history.html "History of Chocolate"] {{webarchive|url=https://web.archive.org/web/20170318231038/http://www.sfu.ca/geog351fall03/groups-webpages/gp8/history/history.html |date=18 March 2017 }}. sfu.ca.</ref></blockquote>
@@ Line 80: / Line 80: @@
 === Milk ===
-Milk chocolate is sweet chocolate that also contains milk powder or condensed milk. In the UK and Ireland, milk chocolate must contain a minimum of 20% total dry cocoa solids; in the rest of the European Union, the minimum is 25%.<ref name="Europa">{{cite web|url=http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0036:EN:NOT|title=Directive 2000/36/EC of the European Parliament and of the Council of 23 June 2000 relating to cocoa and chocolate products intended for human consumption|publisher=[[Publications Office of the European Union]]|accessdate=31 October 2010}}</ref> "White chocolate" contains cocoa butter, sugar, and milk, but no cocoa solids. Chocolate contains alkaloids such as [[theobromine]] and [[phenethylamine]], which have [[physiological]] effects in humans, but the presence of theobromine renders it toxic to some animals, such as dogs and cats.<ref name="autogenerated1">{{cite web|first=Janet Tobiassen|last=Crosby|url=http://vetmedicine.about.com/cs/nutritiondogs/a/chocolatetoxici.htm|work=Veterinary Q & A|title=Chocolate Toxicity|publisher=[[About.com]]|accessdate=20 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20080502141005/http://vetmedicine.about.com/cs/nutritiondogs/a/chocolatetoxici.htm|archivedate=2 May 2008}}</ref>
+Milk chocolate is sweet chocolate that also contains milk powder or condensed milk. In the UK and Ireland, milk chocolate must contain a minimum of 20% total dry cocoa solids; in the rest of the European Union, the minimum is 25%.<ref name="Europa">{{cite web|url=http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0036:EN:NOT|title=Directive 2000/36/EC of the European Parliament and of the Council of 23 June 2000 relating to cocoa and chocolate products intended for human consumption|publisher=[[Publications Office of the European Union]]|accessdate=31 October 2010}}</ref> "White chocolate" contains cocoa butter, sugar, and milk, but no cocoa solids. Chocolate contains alkaloids such as [[theobromine]] and [[phenethylamine]], which have [[physiological]] effects in humans, but the presence of theobromine renders it toxic to some animals, such as dogs and cats.<ref name="autogenerated1">{{cite web|first=Janet Tobiassen|last=Crosby|url=http://vetmedicine.about.com/cs/nutritiondogs/a/chocolatetoxici.htm|website=Veterinary Q & A|title=Chocolate Toxicity|publisher=[[About.com]]|accessdate=20 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20080502141005/http://vetmedicine.about.com/cs/nutritiondogs/a/chocolatetoxici.htm|archivedate=2 May 2008}}</ref>
 === White ===
@@ Line 88: / Line 88: @@
 === Dark ===
-[[Dark chocolate]] is produced by adding fat and sugar to the cacao mixture. The [[U.S. Food and Drug Administration]] calls this "sweet chocolate", and requires a 15% concentration of chocolate liquor. European rules specify a minimum of 35% cocoa solids.<ref name="Europa" /> A higher amount of cocoa solids indicates more bitterness. Semisweet chocolate is a dark chocolate with a low sugar content. Bittersweet chocolate is chocolate liquor to which some sugar (typically a third), more cocoa butter and vanilla are added.{{citation needed|date=May 2018}} It has less sugar and more liquor than semisweet chocolate, but the two are interchangeable in baking. It is also known to last for two years if stored properly. As of 2017, there is no high-quality evidence that dark chocolate affects blood pressure significantly or provides other health benefits.<ref name="reid">{{cite journal|pmid=28439881|year=2017|author1=Ried|first1=K|title=Effect of cocoa on blood pressure|journal=Cochrane Database of Systematic Reviews|volume=4|pages=CD008893|last2=Fakler|first2=P|last3=Stocks|first3=N. P|doi=10.1002/14651858.CD008893.pub3|url=http://cochranelibrary-wiley.com/doi/10.1002/14651858.CD008893.pub3/abstract}}</ref>
+[[Dark chocolate]] is produced by adding fat and sugar to the cacao mixture. The [[U.S. Food and Drug Administration]] calls this "sweet chocolate", and requires a 15% concentration of chocolate liquor. European rules specify a minimum of 35% cocoa solids.<ref name="Europa" /> A higher amount of cocoa solids indicates more bitterness. Semisweet chocolate is a dark chocolate with a low sugar content. Bittersweet chocolate is chocolate liquor to which some sugar (typically a third), more cocoa butter and vanilla are added.{{citation needed|date=May 2018}} It has less sugar and more liquor than semisweet chocolate, but the two are interchangeable in baking. It is also known to last for two years if stored properly. As of 2017, there is no high-quality evidence that dark chocolate affects blood pressure significantly or provides other health benefits.<ref name="reid">{{cite journal|pmid=28439881|year=2017|author1=Ried|first1=K|title=Effect of cocoa on blood pressure|journal=Cochrane Database of Systematic Reviews|volume=4|pages=CD008893|last2=Fakler|first2=P|last3=Stocks|first3=N. P|doi=10.1002/14651858.CD008893.pub3}}</ref>
 === Unsweetened ===
@@ Line 211: / Line 211: @@
 As a solid piece of chocolate, the cocoa butter fat particles are in a crystalline rigid structure that gives the chocolate its solid appearance. Once heated, the crystals of the polymorphic cocoa butter are able to break apart from the rigid structure and allow the chocolate to obtain a more fluid consistency as the temperature increases – the melting process. When the heat is removed, the cocoa butter crystals become rigid again and come closer together, allowing the chocolate to solidify.<ref>{{cite web|last=National Confectioner's Association|title=The Sweet Truth about Cocoa Butter |url=http://nca.files.cms-plus.com/Sweet_Truth_Cocoa_Butter_WEB.pdf |accessdate=23 April 2013 |deadurl=yes |archiveurl=https://web.archive.org/web/20130810033936/http://nca.files.cms-plus.com/Sweet_Truth_Cocoa_Butter_WEB.pdf |archivedate=10 August 2013}}</ref>
-The temperature in which the crystals obtain enough energy to break apart from their rigid conformation would depend on the milk fat content in the chocolate and the shape of the fat molecules, as well as the form of the cocoa butter fat. Chocolate with a higher fat content will melt at a lower temperature.<ref>{{cite web |title=Why Chocolate Melts and Jet Planes Don't |url=http://www.rigb.org/assets/uploads/docs/Lecture%20two_designed.pdf |work=The Royal Institution of Great Britain |accessdate=24 April 2013}}{{dead link|date=January 2016}}</ref>
+The temperature in which the crystals obtain enough energy to break apart from their rigid conformation would depend on the milk fat content in the chocolate and the shape of the fat molecules, as well as the form of the cocoa butter fat. Chocolate with a higher fat content will melt at a lower temperature.<ref>{{cite web |title=Why Chocolate Melts and Jet Planes Don't |url=http://www.rigb.org/assets/uploads/docs/Lecture%20two_designed.pdf |website=The Royal Institution of Great Britain |accessdate=24 April 2013}}{{dead link|date=January 2016}}</ref>
 Making chocolate considered "good" is about forming as many type V crystals as possible. This provides the best appearance and texture and creates the most stable crystals, so the texture and appearance will not degrade over time. To accomplish this, the temperature is carefully manipulated during the crystallization.
 [[File:Various chocolate types.jpg|thumb|Various chocolate types]]
-Generally, the chocolate is first heated to {{convert|45|C|F}} to melt all six forms of crystals.<ref name="temp">{{cite web|first=Elizabeth|last=LaBau|url=http://candy.about.com/od/candybasics/ht/temperchoc.htm|title=How To Temper Chocolate|publisher=[[About.com]]|accessdate=20 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20081008005049/http://candy.about.com/od/candybasics/ht/temperchoc.htm|archivedate=8 October 2008}}</ref><ref name="temp2">{{Cite journal|title=Phase Transitions and Polymorphism of Cocoa Butter|journal=Journal of the American Oil Chemists' Society|author1-last=Loisel |author1-first=C.|author2= Keller |author2-first=G.|author3= Lecq |author3-first=G.|author4= Bourgaux |author4-first=C.|author5= Ollivon |author5-first=M. |doi=10.1007/s11746-998-0245-y|volume=75|issue=4|year=1998 |at=pp.425–439, see Table&nbsp;2 p.&nbsp;426 for tempering temperatures}}</ref> Next, the chocolate is cooled to about {{convert|27|C|F}}, which will allow crystal types IV and V to form. At this temperature, the chocolate is agitated to create many small crystal "seeds" which will serve as nuclei to create small crystals in the chocolate. The chocolate is then heated to about {{convert|31|C|F}} to eliminate any type IV crystals, leaving just type V. After this point, any excessive heating of the chocolate will destroy the temper and this process will have to be repeated. However, other methods of chocolate tempering are used. The most common variant is introducing already tempered, solid "seed" chocolate. The temper of chocolate can be measured with a [[chocolate temper meter]] to ensure accuracy and consistency. A sample cup is filled with the chocolate and placed in the unit which then displays or prints the results.
+Generally, the chocolate is first heated to {{convert|45|C|F}} to melt all six forms of crystals.<ref name="temp">{{cite web|first=Elizabeth|last=LaBau|url=http://candy.about.com/od/candybasics/ht/temperchoc.htm|title=How To Temper Chocolate|publisher=[[About.com]]|accessdate=20 May 2008|deadurl=no|archiveurl=https://web.archive.org/web/20081008005049/http://candy.about.com/od/candybasics/ht/temperchoc.htm|archivedate=8 October 2008}}</ref><ref name="temp2">{{Cite journal|title=Phase Transitions and Polymorphism of Cocoa Butter|journal=Journal of the American Oil Chemists' Society|author1-last=Loisel |author1-first=C.|author2= Keller |author2-first=G.|author3= Lecq |author3-first=G.|author4= Bourgaux |author4-first=C.|author5= Ollivon |author5-first=M. |doi=10.1007/s11746-998-0245-y|volume=75|issue=4|pages=425–439|year=1998 }}</ref> Next, the chocolate is cooled to about {{convert|27|C|F}}, which will allow crystal types IV and V to form. At this temperature, the chocolate is agitated to create many small crystal "seeds" which will serve as nuclei to create small crystals in the chocolate. The chocolate is then heated to about {{convert|31|C|F}} to eliminate any type IV crystals, leaving just type V. After this point, any excessive heating of the chocolate will destroy the temper and this process will have to be repeated. However, other methods of chocolate tempering are used. The most common variant is introducing already tempered, solid "seed" chocolate. The temper of chocolate can be measured with a [[chocolate temper meter]] to ensure accuracy and consistency. A sample cup is filled with the chocolate and placed in the unit which then displays or prints the results.
 Two classic ways of manually tempering chocolate are:
@@ Line 226: / Line 226: @@
 ===Storage===
 [[File:Ghirardelli Chocolate Shop Inside, SF, CA, jjron 25.03.2012.jpg|thumb|Packaged chocolate in the [[Ghirardelli Chocolate Company]] is stored in controlled conditions.]]
-Chocolate is very sensitive to temperature and humidity. Ideal storage temperatures are between {{convert|15|and|17|C|F}}, with a relative humidity of less than 50%. If refrigerated or frozen without containment, chocolate can absorb enough moisture to cause a whitish discoloration, the result of fat or sugar crystals rising to the surface. Various types of "blooming" effects can occur if chocolate is stored or served improperly.<ref>{{cite web |title=X-rays reveal how chocolate turns white|url=http://news.sciencemag.org/chemistry/2015/05/x-rays-reveal-how-chocolate-turns-white|last=DeMarco|first=E.|work=Science Magazine|date=7 May 2015|accessdate=8 May 2015 |doi=10.1126/science.aac4563 |deadurl=no |archiveurl=https://web.archive.org/web/20150508180034/http://news.sciencemag.org/chemistry/2015/05/x-rays-reveal-how-chocolate-turns-white |archivedate=8 May 2015}}</ref>
+Chocolate is very sensitive to temperature and humidity. Ideal storage temperatures are between {{convert|15|and|17|C|F}}, with a relative humidity of less than 50%. If refrigerated or frozen without containment, chocolate can absorb enough moisture to cause a whitish discoloration, the result of fat or sugar crystals rising to the surface. Various types of "blooming" effects can occur if chocolate is stored or served improperly.<ref>{{Cite journal |title=X-rays reveal how chocolate turns white|journal=Science|url=http://news.sciencemag.org/chemistry/2015/05/x-rays-reveal-how-chocolate-turns-white|last=DeMarco|first=E.|website=Science Magazine|date=7 May 2015|accessdate=8 May 2015 |doi=10.1126/science.aac4563 |deadurl=no |archiveurl=https://web.archive.org/web/20150508180034/http://news.sciencemag.org/chemistry/2015/05/x-rays-reveal-how-chocolate-turns-white |archivedate=8 May 2015}}</ref>
 [[Chocolate bloom]] is caused by storage temperature fluctuating or exceeding {{convert|24|C|F}}, while sugar bloom is caused by temperature below {{convert|15|C|F}} or excess humidity. To distinguish between different types of bloom, one can rub the surface of the chocolate lightly, and if the bloom disappears, it is fat bloom. Moving chocolate between temperature extremes, can result in an oily texture. Although visually unappealing, chocolate suffering from bloom is safe for consumption and taste unaffected.<ref>{{cite web|publisher=[[Ghirardelli]] |title=Tips for Chocolate Care |url=http://www.ghirardelli.com/chocopedia/tips.aspx |accessdate=16 April 2007 |deadurl=yes |archiveurl=https://web.archive.org/web/20070206082048/http://ghirardelli.com/chocopedia/tips.aspx |archivedate=6 February 2007 }}</ref><ref>{{cite web |first=Teresa |last=Miller |url=http://www.cals.wisc.edu/media/news/01_97/milkfat_chocolate.html |archiveurl=https://web.archive.org/web/20070609144511/http://www.cals.wisc.edu/media/news/01_97/milkfat_chocolate.html |archivedate=9 June 2007 |title=Milkfat Fractions Help Beat Blooming Chocolate |publisher=College of Agricultural Life and Sciences, University of Wisconsin-Madison |accessdate=16 April 2007}}</ref><ref>{{cite web |url=http://www.cocoabella.com/chocolates02.php |publisher=CocoaBella |title=How to Store Chocolate |accessdate=16 April 2007 |archiveurl=https://web.archive.org/web/20070208160345/http://www.cocoabella.com/chocolates02.php |archivedate=8 February 2007}}</ref> Bloom can be reversed by retempering the chocolate or using it for any use that requires melting the chocolate.<ref>{{cite book |editor-last=Bau |editor-first=Frederic |year=2011 |title=Cooking With Chocolate: Essential Recipes and Techniques |location=Paris |publisher=Flammarion, S.A. |page=147 |isbn=978-2-08-020081-5}}</ref>
@@ Line 280: / Line 280: @@
 Chocolate may be a factor for [[heartburn]] in some people because one of its constituents, [[theobromine]], may affect the [[Lower esophageal sphincter|esophageal sphincter]] muscle in a way that permits stomach acids to enter the [[esophagus]].<ref name="Latif">{{cite journal| author = Latif, R |date=March 2013 | title = Chocolate/cocoa and human health: a review | journal = Neth J Med | volume = 71 | issue = 2 | pages = 63–8 | pmid = 23462053 }}</ref> [[Theobromine poisoning]] is an overdosage reaction to the bitter [[alkaloid]], which happens more frequently in [[domestic animals]] than humans. However, daily intake of 50-100 g cocoa (0.8-1.5 g theobromine) by humans has been associated with sweating, trembling and severe headache.<ref>{{Cite web|url=https://toxnet.nlm.nih.gov/cgi-bin/sis/search2/r?dbs+hsdb%3A%40term+%40DOCNO+7332#permalink|title=3,7-Dimethylxanthine|last=|first=|date=|website=|access-date=}}</ref>
-Chocolate and cocoa contain moderate to high amounts of [[oxalate]],<ref>{{Cite journal | doi = 10.1016/j.jfca.2011.03.008 | title = Oxalate content in commercially produced cocoa and dark chocolate | year = 2011 | last1 = Schroder | first1 = Theresa | last2 = Vanhanen | first2 = Leo | last3 = Savage | first3 = Geoffrey P. | journal = Journal of Food Composition and Analysis | volume = 24 | issue = 7 | pages = 916–922}}</ref><ref>{{Cite journal | pmid = 8833428 | year = 1995 | last1 = Aremu | first1 = CY | last2 = Agiang | first2 = MA | last3 = Ayatse | first3 = JO | title = Nutrient and antinutrient profiles of raw and fermented cocoa beans | volume = 48 | issue = 3 | pages = 217–23 | journal = Plant foods for human nutrition (Dordrecht, Netherlands) | doi=10.1007/bf01088443}}</ref> which may increase someone's risk for [[kidney stone]]s.<ref>{{cite web|url=http://my.clevelandclinic.org/disorders/kidney_stones/np_overview.aspx |title=Kidney Stones: Overview from the Nephrology Department |publisher=Cleveland Clinic |deadurl=yes |archiveurl=https://web.archive.org/web/20130705020952/https://my.clevelandclinic.org/disorders/kidney_stones/np_overview.aspx |archivedate=5 July 2013  }}</ref> During cultivation and production, chocolate may absorb the heavy metal [[lead]] from the environment,<ref name=Rankin>{{Cite journal|last=Rankin|first=Charley W.|author2=Jerome O. Nriagu |author3=Jugdeep K. Aggarwal |author4=Toyin A. Arowolo |author5=Kola Adebayo |author6=A. Russell Flegal |title=Lead Contamination in Cocoa and Cocoa Products: Isotopic Evidence of Global Contamination|journal=Environmental Health Perspectives|date=October 2005|volume=113|issue=10|pmid=16203244|pages=1344–8|pmc=1281277|doi=10.1289/ehp.8009}}</ref> but the total amounts typically eaten are less than the tolerable daily limit for lead consumption, according to a [[World Health Organization]] report from 2010.<ref>{{cite web|title=Lead Content of Soil, Plants, Foods, Air, and Chinese Herb Formulas|url=http://www.itmonline.org/arts/lead.htm|accessdate=7 August 2010|deadurl=no|archiveurl=https://web.archive.org/web/20100731002809/http://www.itmonline.org/arts/lead.htm|archivedate=31 July 2010}}</ref> However, reports from 2014 indicate that "chocolate might be a significant source" of lead ingestion for children if consumption is high,<ref name=Yanus>{{cite journal |last1=Yanus |first1=Rinat Levi |last2=Sela |first2=Hagit |last3=Borojovich |first3=Eitan J.C. |last4=Zakon |first4=Yevgeni |last5=Saphier |first5=Magal |last6=Nikolski |first6=Andrey |last7=Gutflais |first7=Efi |last8=Lorber |first8=Avraham |last9=Karpas |first9=Zeev |title=Trace elements in cocoa solids and chocolate: An ICPMS study |journal=Talanta |volume=119 |issue= |pages=1–4 |year=2014 |pmid=24401377 |doi=10.1016/j.talanta.2013.10.048 }}</ref><ref>{{cite journal |last1=Villa |first1=Javier E. L. |last2=Peixoto |first2=Rafaella R. A. |last3=Cadore |first3=Solange |title=Cadmium and Lead in Chocolates Commercialized in Brazil |journal=Journal of Agricultural and Food Chemistry |volume=62 |issue=34 |pages=8759–63 |year=2014 |pmid=25123980 |doi=10.1021/jf5026604 }}</ref> and "one 10 g cube of dark chocolate may contain as much as 20% of the daily lead oral limit."<ref name=Yanus/>
+Chocolate and cocoa contain moderate to high amounts of [[oxalate]],<ref>{{Cite journal | doi = 10.1016/j.jfca.2011.03.008 | title = Oxalate content in commercially produced cocoa and dark chocolate | year = 2011 | last1 = Schroder | first1 = Theresa | last2 = Vanhanen | first2 = Leo | last3 = Savage | first3 = Geoffrey P. | journal = Journal of Food Composition and Analysis | volume = 24 | issue = 7 | pages = 916–922}}</ref><ref>{{Cite journal | pmid = 8833428 | year = 1995 | last1 = Aremu | first1 = CY | last2 = Agiang | first2 = MA | last3 = Ayatse | first3 = JO | title = Nutrient and antinutrient profiles of raw and fermented cocoa beans | volume = 48 | issue = 3 | pages = 217–23 | journal = Plant Foods for Human Nutrition (Dordrecht, Netherlands) | doi=10.1007/bf01088443}}</ref> which may increase someone's risk for [[kidney stone]]s.<ref>{{cite web|url=http://my.clevelandclinic.org/disorders/kidney_stones/np_overview.aspx |title=Kidney Stones: Overview from the Nephrology Department |publisher=Cleveland Clinic |deadurl=yes |archiveurl=https://web.archive.org/web/20130705020952/https://my.clevelandclinic.org/disorders/kidney_stones/np_overview.aspx |archivedate=5 July 2013  }}</ref> During cultivation and production, chocolate may absorb the heavy metal [[lead]] from the environment,<ref name=Rankin>{{Cite journal|last=Rankin|first=Charley W.|author2=Jerome O. Nriagu |author3=Jugdeep K. Aggarwal |author4=Toyin A. Arowolo |author5=Kola Adebayo |author6=A. Russell Flegal |title=Lead Contamination in Cocoa and Cocoa Products: Isotopic Evidence of Global Contamination|journal=Environmental Health Perspectives|date=October 2005|volume=113|issue=10|pmid=16203244|pages=1344–8|pmc=1281277|doi=10.1289/ehp.8009}}</ref> but the total amounts typically eaten are less than the tolerable daily limit for lead consumption, according to a [[World Health Organization]] report from 2010.<ref>{{cite web|title=Lead Content of Soil, Plants, Foods, Air, and Chinese Herb Formulas|url=http://www.itmonline.org/arts/lead.htm|accessdate=7 August 2010|deadurl=no|archiveurl=https://web.archive.org/web/20100731002809/http://www.itmonline.org/arts/lead.htm|archivedate=31 July 2010}}</ref> However, reports from 2014 indicate that "chocolate might be a significant source" of lead ingestion for children if consumption is high,<ref name=Yanus>{{cite journal |last1=Yanus |first1=Rinat Levi |last2=Sela |first2=Hagit |last3=Borojovich |first3=Eitan J.C. |last4=Zakon |first4=Yevgeni |last5=Saphier |first5=Magal |last6=Nikolski |first6=Andrey |last7=Gutflais |first7=Efi |last8=Lorber |first8=Avraham |last9=Karpas |first9=Zeev |title=Trace elements in cocoa solids and chocolate: An ICPMS study |journal=Talanta |volume=119 |issue= |pages=1–4 |year=2014 |pmid=24401377 |doi=10.1016/j.talanta.2013.10.048 }}</ref><ref>{{cite journal |last1=Villa |first1=Javier E. L. |last2=Peixoto |first2=Rafaella R. A. |last3=Cadore |first3=Solange |title=Cadmium and Lead in Chocolates Commercialized in Brazil |journal=Journal of Agricultural and Food Chemistry |volume=62 |issue=34 |pages=8759–63 |year=2014 |pmid=25123980 |doi=10.1021/jf5026604 }}</ref> and "one 10 g cube of dark chocolate may contain as much as 20% of the daily lead oral limit."<ref name=Yanus/>
 A few studies have documented [[allergic reactions]] from chocolate in children.<ref name="Latif"/> Other research has shown that dark chocolate can aggravate [[acne]] in men who are prone to it.<ref>{{Cite journal|last=Vongraviopap|first=Saivaree|last2=Asawanonda|first2=Pravit|date=May 2016|title=Dark chocolate exacerbates acne|journal=International Journal of Dermatology|volume=55|issue=5|pages=587–591|doi=10.1111/ijd.13188|issn=1365-4632|pmid=26711092}}</ref> Research has also shown that consuming dark chocolate does not substantially affect [[blood pressure]].<ref name=reid/> Chocolate and cocoa are under preliminary research to determine if consumption affects the risk of certain [[cardiovascular diseases]]<ref>{{Cite journal | last1 = Buitrago-Lopez | first1 = A. | last2 = Sanderson | first2 = J. | last3 = Johnson | first3 = L. | last4 = Warnakula | first4 = S. | last5 = Wood | first5 = A. | last6 = Di Angelantonio | first6 = E. | last7 = Franco | first7 = O. H. | title = Chocolate consumption and cardiometabolic disorders: Systematic review and meta-analysis | doi = 10.1136/bmj.d4488 | journal = BMJ | volume = 343 | pages = d4488 | year = 2011 | pmid =  21875885| pmc =3163382 }}</ref> or [[cognitive abilities]].<ref>{{Cite journal|title=Intake of Flavonoid-Rich Wine, Tea, and Chocolate by Elderly Men and Women Is Associated with Better Cognitive Test Performance| journal= Journal of Nutrition|volume=139|issue=1|pages= 120–127|author=Nurk, Eha|pmid=19056649|doi=10.3945/jn.108.095182|year=2009|last2=Refsum|first2=H.|last3=Drevon|first3=C. A.|last4=Tell|first4=G. S.|last5=Nygaard|first5=H. A.|last6=Engedal|first6=K.|last7=Smith|first7=A. D.|last8=Vollset|first8=SE|last9=Refsum|first9=H}}</ref>
-A one-tablespoon serving of dry unsweetened [[cocoa powder]] has 12.1&nbsp;mg of [[caffeine]]<ref>{{Cite web|url=https://nutritiondata.self.com/facts/sweets/5471/2|title=Cocoa, dry powder, unsweetened Nutrition Facts & Calories|website=nutritiondata.self.com|language=en-US|access-date=2018-08-24}}</ref> and a 25-g single serving of [[dark chocolate]] has 22.4&nbsp;mg of caffeine.<ref>{{Cite web|url=https://nutritiondata.self.com/facts/sweets/10638/2|title=Candies, chocolate, dark, 70-85% cacao solids Nutrition Facts & Calories|website=nutritiondata.self.com|language=en-US|access-date=2018-08-24}}</ref> Although a single 7 oz. serving of coffee may contain 80–175&nbsp;mg,<ref name="Bunker">{{cite journal|last=Bunker|first=M. L.|last2=McWilliams|first2=M.|year=1979|title=Caffeine content of common beverages|journal=Journal of the American Dietetic Association|volume=74|issue=1|pages=28–32|pmid=762339}}</ref> studies have shown psychoactive effects in caffeine doses as low as 9&nbsp;mg,<ref>{{Cite news|url=https://clinicaltrials.gov/ct2/show/NCT00487227|title=Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function - Full Text View - ClinicalTrials.gov|access-date=2018-08-24|language=en}}</ref> and a dose as low as 12.5&nbsp;mg was shown to have effects on cognitive performance.<ref>{{Cite journal|last=Smit|first=H. J.|last2=Rogers|first2=P. J.|date=October 2010|title=Effects of low doses of caffeine on cognitive performance, mood and thirst in low and higher caffeine consumers|url=https://www.ncbi.nlm.nih.gov/pubmed/11057520|journal=Psychopharmacology|volume=152|issue=2|pages=167–173|issn=0033-3158|pmid=11057520|via=}}</ref>
+A one-tablespoon serving of dry unsweetened [[cocoa powder]] has 12.1&nbsp;mg of [[caffeine]]<ref>{{Cite web|url=https://nutritiondata.self.com/facts/sweets/5471/2|title=Cocoa, dry powder, unsweetened Nutrition Facts & Calories|website=nutritiondata.self.com|language=en-US|access-date=2018-08-24}}</ref> and a 25-g single serving of [[dark chocolate]] has 22.4&nbsp;mg of caffeine.<ref>{{Cite web|url=https://nutritiondata.self.com/facts/sweets/10638/2|title=Candies, chocolate, dark, 70-85% cacao solids Nutrition Facts & Calories|website=nutritiondata.self.com|language=en-US|access-date=2018-08-24}}</ref> Although a single 7 oz. serving of coffee may contain 80–175&nbsp;mg,<ref name="Bunker">{{cite journal|last=Bunker|first=M. L.|last2=McWilliams|first2=M.|year=1979|title=Caffeine content of common beverages|journal=Journal of the American Dietetic Association|volume=74|issue=1|pages=28–32|pmid=762339}}</ref> studies have shown psychoactive effects in caffeine doses as low as 9&nbsp;mg,<ref>{{Cite news|url=https://clinicaltrials.gov/ct2/show/NCT00487227|title=Effects of Low Doses of Caffeine on Mood, Physiology and Mental Function - Full Text View - ClinicalTrials.gov|access-date=2018-08-24|language=en}}</ref> and a dose as low as 12.5&nbsp;mg was shown to have effects on cognitive performance.<ref>{{Cite journal|last=Smit|first=H. J.|last2=Rogers|first2=P. J.|date=October 2010|title=Effects of low doses of caffeine on cognitive performance, mood and thirst in low and higher caffeine consumers|journal=Psychopharmacology|volume=152|issue=2|pages=167–173|issn=0033-3158|pmid=11057520}}</ref>
 Excessive consumption of large quantities of any [[energy]]-rich food, such as chocolate, without a corresponding increase in activity to expend the associated calories, can cause weight gain and possibly lead to [[obesity]].<ref name="Latif" /> Raw chocolate is high in [[cocoa butter]], a fat which is removed during chocolate refining and then added back in varying proportions during the manufacturing process. Manufacturers may add other fats, sugars, and milk, all of which increase the caloric content of chocolate.<ref name="Latif" />
@@ Line 290: / Line 290: @@
 ===Phytochemicals===
-Cocoa contains certain [[phytochemical]]s. Cocoa solids are a source of [[flavonoids]]<ref>{{Cite journal|last1=Miller|first1=K. B.|last2=Hurst|first2=W. J.|last3=Payne|first3=M. J.|last4=Stuart|first4=D. A.|last5=Apgar|first5=J.|last6=Sweigart|first6=D. S.|last7=Ou|first7=B.|year=2008|title=Impact of Alkalization on the Antioxidant and Flavanol Content of Commercial Cocoa Powders|journal=Journal of Agricultural and Food Chemistry|volume=56|issue=18|pages=8527–33; 8527|doi=10.1021/jf801670p|pmid=18710243}}</ref> and [[alkaloid]]s, such as [[theobromine]], [[phenethylamine]], and [[caffeine]].<ref>{{cite web|url=http://www.health.nsw.gov.au/mhdao/Factsheets/Pages/caffeine.aspx|title=Caffeine|work=New South Wales Government|archiveurl=https://web.archive.org/web/20150924011118/http://www.health.nsw.gov.au/mhdao/Factsheets/Pages/caffeine.aspx|archivedate=24 September 2015|deadurl=no|accessdate=8 September 2015}}</ref>
+Cocoa contains certain [[phytochemical]]s. Cocoa solids are a source of [[flavonoids]]<ref>{{Cite journal|last1=Miller|first1=K. B.|last2=Hurst|first2=W. J.|last3=Payne|first3=M. J.|last4=Stuart|first4=D. A.|last5=Apgar|first5=J.|last6=Sweigart|first6=D. S.|last7=Ou|first7=B.|year=2008|title=Impact of Alkalization on the Antioxidant and Flavanol Content of Commercial Cocoa Powders|journal=Journal of Agricultural and Food Chemistry|volume=56|issue=18|pages=8527–33; 8527|doi=10.1021/jf801670p|pmid=18710243}}</ref> and [[alkaloid]]s, such as [[theobromine]], [[phenethylamine]], and [[caffeine]].<ref>{{cite web|url=http://www.health.nsw.gov.au/mhdao/Factsheets/Pages/caffeine.aspx|title=Caffeine|website=New South Wales Government|archiveurl=https://web.archive.org/web/20150924011118/http://www.health.nsw.gov.au/mhdao/Factsheets/Pages/caffeine.aspx|archivedate=24 September 2015|deadurl=no|accessdate=8 September 2015}}</ref>
 ==Labeling==
@@ Line 377: / Line 377: @@
 {{Reflist|30em}}
 *{{cite book |ref=harv |author1=Sophie D. Coe |author2=Michael D. Coe |title=The True History of Chocolate |url=https://books.google.com/books?id=9v86CwAAQBAJ |date=28 June 2013 |publisher=Thames & Hudson |isbn=978-0-500-77093-1}}
-*{{cite journal |ref=harv |last1=Chinchilla Mazariegos |first1=Oswaldo |title=HUMAN SACRIFICE AND DIVINE NOURISHMENT IN MESOAMERICA: THE ICONOGRAPHY OF CACAO ON THE PACIFIC COAST OF GUATEMALA |journal=Ancient Mesoamerica |volume=27 |issue=02 |year=2016 |pages=361–375 |issn=0956-5361 |doi=10.1017/S0956536116000201}}
+*{{cite journal |ref=harv |last1=Chinchilla Mazariegos |first1=Oswaldo |title=HUMAN SACRIFICE AND DIVINE NOURISHMENT IN MESOAMERICA: THE ICONOGRAPHY OF CACAO ON THE PACIFIC COAST OF GUATEMALA |journal=Ancient Mesoamerica |volume=27 |issue=2 |year=2016 |pages=361–375 |issn=0956-5361 |doi=10.1017/S0956536116000201}}
 ==Further reading==
-* {{Cite book|last=Almond|first=Steve|authorlink=Steve Almond|title=[[Candyfreak|Candyfreak: A Journey Through the Chocolate Underbelly of America]]|publisher=[[Algonquin Books]]|year=2004|isbn=1-56512-421-9}}
+* {{Cite book|last=Almond|first=Steve|authorlink=Steve Almond|title=Candyfreak: A Journey Through the Chocolate Underbelly of America|publisher=[[Algonquin Books]]|year=2004|isbn=978-1-56512-421-9|title-link=Candyfreak}}
 * Grivetti, Louis E. and Howard-Yana Shapiro, eds. ''Chocolate: History, Culture, and Heritage'' (2009), 57 essays, 1064pp; comprehensive scholarly worldwide history with coverage of anthropology, agriculture, religion, ethics, art, medicine and technology.
 *  Norton, Marcy. ''Sacred Gifts, Profane Pleasures: A History of Tobacco and Chocolate in the Atlantic World'' (Cornell UP, 2008)

v t e Chocolate
Cocoa bean	Bulk cocoa Flavor cocoa Chocolate liquor Cocoa butter Cocoa solids Theobroma cacao
Components	Anandamide Caffeine Endorphins Enkephalin Flavan-3-ol Lecithin Phenethylamine Phenylalanine Salsolinol Tetramethylpyrazine Theobromine Theophylline Tryptamine Tryptophan Tyramine Tyrosine Valeric acid
Types	Baking Compound Couverture Dark Gianduja Milk Raw chocolate Ruby White
Products	Caffè mocha Chocolate bar Brands Chocolate biscuit Chocolate brownie Chocolate cake Chocolate chip cookie Chocolate chip Chocolate coins Chocolate crackles Chocolate gravy Chocolate ice cream Chocolate liqueur Chocolate milk Chocolate pudding Chocolate spread Chocolate syrup Chocolate truffle Cioccolato di Modica Fudge Ganache Hot chocolate Other beverages Chocolate-covered foods Mint chocolate Mole
Processes	Aerated chocolate Broma process Conching Dutch process Enrober Sugar crust Tempering
Industry	Organic chocolate Fair trade cocoa Child labour in cocoa production Big Chocolate Chocolaterie Chocolatier Côte d'Ivoire–Ghana Cocoa Initiative The Dark Side of Chocolate Environmental impact European Cocoa and Chocolate Directive Harkin–Engel Protocol International Cocoa Organization International Cocoa Quarantine Centre Manufacturers (vertical) Philippine chocolate industry Production in Ghana Ghana Cocoa Board Production in Ivory Coast Production in Nigeria Production in São Tomé and Príncipe World Cocoa Foundation
By country	Belgium France Switzerland
Other topics	Chocolate addiction Chocolate bloom Chocolate fountain Chocolate museums Chocolatiers Cocoa smuggling History In savory cooking Military chocolate Switzerland United States
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