Food and drink prohibitions
Some people do not eat various specific foods and beverages in conformity with various religious, cultural, legal or other societal prohibitions. Many of these prohibitions constitute taboos. Many food taboos and other prohibitions forbid the meat of a particular animal, including mammals, rodents, reptiles, amphibians, fish, molluscs, crustaceans and insects, which may relate to a disgust response being more often associated with meats than plant-based foods. Some prohibitions are specific to a particular part or excretion of an animal, while others forgo the consumption of plants or fungi.
Some food prohibitions can be defined as rules, codified by religion or otherwise, about which foods, or combinations of foods, may not be eaten and how animals are to be slaughtered or prepared. The origins of these prohibitions are varied. In some cases, they are thought to be a result of health considerations or other practical reasons; in others, they relate to human symbolic systems.
Some foods may be prohibited during certain religious periods (e.g., Lent), at certain stages of life (e.g., pregnancy), or to certain classes of people (e.g., priests), even though the food is otherwise permitted. On a comparative basis, what may be declared unfit for one group may be perfectly acceptable to another within the same culture or across different cultures. Food taboos usually seem to be intended to protect the human individual from harm, spiritually or physically, but there are numerous other reasons given within cultures for their existence. An ecological or medical background is apparent in many, including some that are seen as religious or spiritual in origin. Food taboos can help utilizing a resource more efficiently, but when applied to only a subsection of the community, a food taboo can also lead to the monopolization of a food item by those exempted. A food taboo acknowledged by a particular group or tribe as part of their ways, aids in the cohesion of the group, helps that particular group to stand out and maintain its identity in the face of others and therefore creates a feeling of "belonging".
Various religions forbid the consumption of certain types of food. For example, Judaism prescribes a strict set of rules, called Kashrut, regarding what may and may not be eaten, and notably forbidding the mixing of meat with dairy products. Islam has similar laws, dividing foods into haram (forbidden) and halal (permitted). Jains often follow religious directives to observe vegetarianism. Most Hindus do not eat beef, and some Hindus apply the concept of ahimsa (non-violence) to their diet and consider vegetarianism as ideal, and practise forms of vegetarianism. In some cases, the process of preparation rather than the food itself comes under scrutiny. For instance, in early medieval Christianity, certain uncooked foods were of dubious status: a penitential ascribed to Bede outlined a (mild) penance for those who ate uncooked foods, and Saint Boniface wrote to Pope Zachary (in a letter preserved in the Boniface correspondence, no. 87) asking him how long bacon would have to be cured to be proper for consumption. The Kapu system was used in Hawaii until 1819.
Aside from formal rules, there are cultural taboos against the consumption of some animals. Within a given society, some meats will be considered to be not for consumption that are outside the range of the generally accepted definition of a foodstuff. Novel meats, i.e. animal-derived food products not familiar to an individual or to a culture, generally provoke a disgust reaction, which may be expressed as a cultural taboo. For example, although dog meat is eaten, in certain circumstances, in Korea, Vietnam, and China, it is considered inappropriate as a food in most Western countries, except Switzerland where rural consumption of cat and dog meat is traditional.  Likewise, horse meat is rarely eaten in the English-speaking world, although it is part of the national cuisine of countries as widespread as Kazakhstan, Japan, Italy, and France.
Sometimes food prohibitions enter national or local law, as with the ban on cattle abattoirs in most of India, and horse slaughter in the United States. Even after reversion to Chinese rule, Hong Kong has not lifted its ban on supplying meat from dogs and cats, created during British rule.
Environmentalism, ethical consumerism and other activist movements are giving rise to new prohibitions and eating guidelines. A fairly recent addition to cultural food prohibitions is the meat and eggs of endangered species or animals that are otherwise protected by law or international treaty. Examples of such protected species include some species of whales, sea turtles, and migratory birds. Similarly, sustainable seafood advisory lists and certification discourage the consumption of certain seafoods due to unsustainable fishing. Organic certification prohibits certain synthetic chemical inputs during food production, or genetically modified organisms, irradiation, and the use of sewage sludge. The Fair Trade movement and certification discourage the consumption of food and other goods produced in exploitative working conditions. Other social movements generating taboos include Local Food and The 100-Mile Diet, both of which encourage abstinence from non-locally produced food, and veganism, in which adherents endeavour not to use or consume animal products of any kind.
Judaism strictly forbids the consumption of amphibians such as frogs. The restriction is described in Leviticus 11:29-30 and 42–43. Derivative chemical products from amphibians, as well as with other proscribed animals, must be avoided.
In other cultures, foods such as frog legs are treasured as delicacies, and the animals may be raised commercially in some circumstances. However, environmental concerns over the endangerment of frogs, even possibly pushing them into extinction, due to overconsumption has prompted legal action in nations such as France to limit their use in food. The French Ministry of Agriculture began taking measures to protect native frog species in 1976, and efforts have continued since. Mass commercial harvesting of the animals was banned in 1980, though international imports as well as private, individual hunting and cooking remains legal in many areas.
The Torah (Leviticus 11:13) explicitly states that the eagle, vulture, and osprey are not to be eaten. A bird now commonly raised for meat in some areas, the ostrich, is explicitly banned as food in some interpretations of Leviticus 11:16. Rabbis have frequently inferred that the singling out of birds of prey as well as natural scavengers in tradition for prohibition creates a distinction with other avian species; thus, eating chickens, ducks, geese, and turkeys is allowed.
Scavengers and carrion-eaters such as vultures and crows are avoided as food in many cultures because they are perceived as carriers of disease and unclean, and associated with death. An exception is the rook, which was a recognised country dish, and which has in more recent times been served in a Scottish restaurant in London. In Western cultures today, most people regard songbirds as backyard wildlife rather than as food.
A balut is a developing bird embryo (usually a duck or chicken) that is boiled and eaten from the shell. Part of the Quran includes understanding and respecting the law that any animal products should not be eaten if the animal has not been slaughtered properly, making the animal or animal-product "maytah". Because balut is an egg containing a partly-developed embryo, Muslims believe this makes it "haram", or "forbidden".
The Ortolan bunting developed as a more recent taboo food among French gourmets. The tiny birds were captured alive, force-fed, then drowned in Armagnac, “roasted whole and eaten that way, bones and all, while the diner draped his head with a linen napkin to preserve the precious aromas and, some believe, to hide from God.” The Wine Spectator
The eating of camels is strictly prohibited by the Torah in Deuteronomy 14:7 and Leviticus 11:4. The Torah considers the camel unclean because even though it chews the cud, or regurgitates—the way bovines, sheep, goats, deer, antelope, and giraffes (all of which are kosher) do—it does not meet the cloven hoof criterion. Like these animals, camels (and llamas) are ruminants with a multi-chambered stomach. Camels are even-toed ungulates, with feet split in two. However, a camel's feet form soft pads rather than hard hooves.
There is a strong taboo against eating cats in many Western parts of the world, including most of the Americas and Europe. Cat meat is forbidden by Jewish and Islamic law as both religions forbid the eating of carnivores. Cat meat is eaten as part of the cuisines of China, Vietnam and Switzerland. Cats are commonly regarded as pets in Western countries, or as working animals, kept to control vermin, not as a food animal, and consumption of cats is thus seen as a barbaric act by a large part of the population in those countries. Cat meat was eaten, for example, during the famine in the Siege of Leningrad. In 1996, a place that served cat meat was supposedly discovered by the Argentine press in a shanty town in Rosario, but in fact the meal had been set up by media from Buenos Aires.
In 2008, it was reported that cats were a part of the local diet in Guangdong, China, with many cats being shipped down from the north and one Guangzhou-based business receiving up to 10,000 cats per day from different parts of China. Protesters in other parts of China have urged the Guangdong provincial government to crack down on cat traders and restaurants that serve cat meat, although no law says it is illegal to eat cats.
The term "roof-hare" (roof-rabbit, German Dachhase) applies to cat meat presented as that of a hare, another small mammal used as a source of meat. Subtracting the skin, feet, head and tail, hare and cat carcasses appear similar. Dar gato por liebre ("to pass off a cat as a hare") is an expression common to many Spanish-speaking countries, equivalent to "to pull the wool over someone's eyes" derived from this basic scam. There is an equivalent Portuguese expression Comprar gato por lebre, meaning "to buy a cat as a hare". The expression churrasco de gato ("cat barbecue") is largely used in Brazil with a humorous note, especially for roadside stands that offer grilled meat on a stick (often coated with farofa), due to their poor hygiene and that the source of the meat is mostly unknown. Also, in the Philippines, there is an urban legend and a joke that some vendors use cat meat to make siopao (steamed bun), leading some Filipinos to name their pet cats "Siopao". Meanwhile, "kitten cakes" and "buy three shawarma - assemble a kitten" are common Russian urban jokes about the suspect origin of food from street vendors' stalls. In English, the common expression refers to what the victim of the trick thinks is happening: "Buy a pig in a poke."
The inhabitants of Vicenza in northern Italy are reputed to eat cats, although the practice has been out of use for decades. In February 2010, a popular Italian gastronome was criticized and suspended from a show for talking about the former practice of eating cat stew in Tuscany.
During the so-called "Bad Times" of hunger in Europe during and after World War I and World War II "roof-rabbit" was a common food. Those who thought that they were eating Australian rabbits were really eating European cats.
Cattle hold a traditional place as objects of reverence in countries such as India. Some Hindus, particularly Brahmins, are vegetarian and strictly abstain from eating meat. All of those who do eat meat abstain from the consumption of beef, as the cow holds a sacred place in Hinduism. For example, tradition states that the goddess Kamadhenu manifests herself as a wish-granting divine cow, with such stories repeated over generations.
In contrast to cow slaughter, consumption of dairy products such as milk, yogurt, and particularly ghee (a form of butter) is highly common in India. Cow-derived products play a significant role in Hinduism with milk particularly being highly revered, often being used in holy ceremonies.
Bullocks were the primary source of agricultural power and transportation in the early days, and as India adopted an agricultural lifestyle, the cow proved to be a very useful animal: this respect stemming out of necessity led to abstaining from killing cows for food; for example, if a famine-stricken village kills and eats its bullocks, they will not be available to pull the plough and the cart when next planting season comes. However, this hypothesis has found little data to support it. Areas suffering from famine may resort to consuming cattle in efforts to survive until the next season.
By Indian law, the slaughter of female cattle (i.e. cows) is banned in almost all Indian states except Kerala, West Bengal and the seven north eastern states. A person involved in either cow slaughter or its illegal transportation could be jailed in many states. Slaughter of cows is an extremely provocative issue for many Hindus.
Some ethnic Chinese may also refrain from eating cow meat, because many of them feel that it is wrong to eat an animal that was so useful in agriculture. Some Chinese Buddhists discourage the consumption of beef, although it is not considered taboo. A similar taboo can be seen among Sinhalese Buddhists, who consider it to be ungrateful to kill the animal whose milk and labour provides livelihoods to many Sinhalese people. However, Sinhalese Buddhists who do not live in Sri Lanka might eat beef.
Burmese Buddhists also have a taboo against eating beef, because they consider cows as an animal responsible for working in the fields with human beings. However, it is not strictly considered taboo in populated cities like Mandalay, Yangon etc.
In the town of Kudus on the Indonesian island of Java, there is also a taboo on eating beef, despite most people being Muslim. The reason why the people of Kudus have a taboo against eating beef is because killing a cow offends Hindus, and a good Muslim should not offend the beliefs of other religions.
While both beef and dairy consumption is permitted in Judaism, the mixing of dairy products with any sort of meat is completely forbidden.
Chewing gum is a soft, cohesive substance intended for chewing but not swallowing. Humans have used chewing gum for at least 3,000 years. The chewing gum sales ban in Singapore has been in place since 1992. It is currently not illegal to chew gum in Singapore, merely to import it and sell it, with certain exceptions. Since 2004, an exception has existed for therapeutic, dental, and nicotine chewing gum, which can be bought from a doctor or registered pharmacist. 
Crustaceans and other seafood
As a general rule, all seafood is permissible in the 3 madh'hab of Sunni Islam except Hanafi school of thought. The Ja'fari school of Islamic jurisprudence, which is followed by most Shia Muslims, prohibits non-piscine (lacking scales) seafood, with the exception of shrimp.
In Italian cuisine, seafood is not eaten with cheese.
The consumption of dairy products together with meat is also prohibited as non-kosher in the Jewish faith, based on Deuteronomy 14:21: "You shall not boil a young goat in its mother's milk."
In Italian cuisine, cheese is not eaten with fish and seafood.
Generally in all Western countries eating dog meat is considered taboo, though that taboo has been broken under threat of starvation in the past. Dog meat has been eaten in every major German crisis at least since the time of Frederick the Great, and is commonly referred to as "blockade mutton." In the early 20th century, consumption of dog meat in Germany was common. Suspicions about the provenance of Frankfurter meat sold by German immigrants in the United States led to the coinage of the term 'hot dog'. In 1937, a meat inspection law targeted against trichinella was introduced for pigs, dogs, boars, foxes, badgers, and other carnivores. Dog meat has been prohibited in Germany since 1986. In 2009 a scandal erupted when a farm near the Polish town of Częstochowa was discovered rearing dogs to be rendered down into smalec - lard.
According to the ancient Hindu scriptures (cf. Manusmṛti and medicinal texts like Sushruta Samhita), dog's meat was regarded as the most unclean (and rather poisonous) food possible. Dog's meat is also regarded as unclean under Jewish and Islamic dietary laws; therefore, consumption of dog meat is forbidden by both of those religious traditions.
In Irish mythology, legend recounts how Cú Chulainn, the great hero of Ulster whose name means Culann's Hound, was presented with a Morton's fork, forcing him to either break his geis (taboo) about eating dog meat or declining hospitality; Cú Chulainn chose to eat the meat, leading ultimately to his death.
In Mexico during the pre-Columbian era a hairless dog named xoloitzcuintle was commonly eaten. After colonization, this custom stopped. Lewis & Clark plus the men in his expedition were recorded in Lewis's journals of having eaten and enjoyed dog meat which was common practice in Indians of the American Plains.
In East Asia, most countries excluding Vietnam, North and South Korea rarely consume dog meat either because of Islamic or Buddhist values or animal rights as in the Philippines. Manchus have a prohibition against the eating of dog meat, which is sometimes consumed by the Manchus' neighboring Northeastern Asian peoples. The Manchus also avoid the wearing of hats made of dog's fur. In addition to Manchus, Chinese Mongol, Miao, Muslims, Tibetan, Yao and Yi have a taboo against dog meat. In Indonesia, due to its majority Islamic population, consuming dog meat is prohibited, with exception of Christian Batak and Minahasan ethnic groups that traditionally consumed dog meat.
An egg that naturally contains a spot of blood may not be eaten under Jewish and Islamic tradition, but eggs without any blood are commonly consumed (and are not considered to be meat, so may be eaten with dairy).
Speak not to me with a mouth that eats fish— Somali nomad taunt
There are taboos on eating fish among many upland pastoralists and agriculturalists (and even some coastal peoples) inhabiting parts of southeastern Egypt, Ethiopia, Eritrea, Somalia, Kenya, and northern Tanzania. This is sometimes referred to as the "Cushitic fish-taboo", as Cushitic speakers are believed to have been responsible for the introduction of fish avoidance to East Africa, though not all Cushitic groups avoid fish. The zone of the fish taboo roughly coincides with the area where Cushitic languages are spoken, and as a general rule, speakers of Nilo-Saharan and Semitic languages do not have this taboo, and indeed many are watermen. The few Bantu and Nilotic groups in East Africa that do practice fish avoidance also reside in areas where Cushites appear to have lived in earlier times. Within East Africa, the fish taboo is found no further than Tanzania. This is attributed to the local presence of the tsetse fly and in areas beyond, which likely acted as a barrier to further southern migrations by wandering pastoralists, the principal fish-avoiders. Zambia and Mozambique's Bantus were therefore spared subjugation by pastoral groups, and they consequently nearly all consume fish.
There is also another center of fish avoidance in Southern Africa, among mainly Bantu speakers. It is not clear whether this disinclination developed independently or whether it was introduced. It is certain, however, that no avoidance of fish occurs among southern Africa's earliest inhabitants, the Khoisan. Nevertheless, since the Bantu of southern Africa also share various cultural traits with the pastoralists further north in East Africa, it is believed that, at an unknown date, the taboo against the consumption of fish was similarly introduced from East Africa by cattle-herding peoples who somehow managed to get their livestock past the aforementioned tsetse fly endemic regions.
Certain species of fish are also forbidden in Judaism such as the freshwater eel (Anguillidae) and all species of catfish. Although they live in water, they appear to have no scales (except under a microscope) (see Leviticus 11:10-13). Sunni Muslim laws are more flexible in this. Catfish and shark are generally seen as halal as they are special types of fish. Eel is generally considered permissible in the four Sunni madh'hab. The Ja'fari jurisprudence followed by most Shia Muslims forbid all species of fish that does not have scales, it also forbid all shell fish species except prawns.
Norse settlers in Greenland (10th–15th centuries AD) may have developed a taboo against fish consumption, as recounted in Jared Diamond's Collapse: How Societies Choose to Fail or Succeed. This is unusual, as Norsemen did not generally have a taboo against fish, Diamond noting that "Fish bones account for much less than 0.1% of animal bones recovered at Greenland Norse archeological sites, compared to between 50 and 95% at most contemporary Iceland, northern Norway, and Shetland sites." However, this has been disputed by archaeologists.
Many countries observe this as a delicacy but it is a taboo in most countries. Considered as corpses, fetuses of goats and sheep are a delicacy in Anglo-Indian culture, although being taboo in both parent cultures (English and Indian). Known as "kutti pi" (fetus bag).
In Iceland, rural parts of Sweden and Western Finland, although not taboo, mushrooms were not widely eaten before the Second World War. They were viewed as food for cows and were also associated with the stigma of being wartime and poverty food.
Guinea pigs, or cuy, are commonly eaten in Peru, in the southwestern cities and villages of Colombia, and among some populations in the highlands of Ecuador, mostly in the Andes highlands. Cuyes can be found on the menu of restaurants in Lima and other cities in Peru, as well as in Pasto, Colombia. Guinea pig meat is exported to the United States and European nations. In 2004, the New York City Department of Parks and Recreation took legal action to stop vendors serving cuy at an Ecuadorian festival in Flushing Meadows Park. New York State allows for the consumption of guinea pigs, but New York City prohibits it. Accusations of cultural persecution have since been leveled.
Some adherents of the Greek Orthodox Church avoid basil due to its association with the cross of Christ. It is believed that the cross was discovered in 325 AD by Saint Helen on a hill covered in beautiful, fragrant basil bushes, a hitherto unknown plant. The plant was named βασιλικόν φυτόν (basilikón fytón) "royal plant" and today is grown and admired rather than eaten. Fine basil plants are brought to church every year on September 14 to commemorate this legend in a celebration known as the Elevation of the Holy Cross.
Horses and other equines
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Horse meat is part of the cuisine of many countries in Europe, but is taboo in some religions and many countries. It is forbidden by Jewish law, because the horse is not a ruminant, nor does it have cloven hooves. Similarly to dogs, eating horses was a taboo for the Castro culture in Northwestern Portugal, and it is still a counter-cultural practice in the region.
Horse meat is forbidden by some sects of Christianity. In 732 CE, Pope Gregory III instructed Saint Boniface to suppress the pagan practice of eating horses, calling it a "filthy and abominable custom". The Christianisation of Iceland in 1000 CE was achieved only when the Church promised that Icelanders could continue to eat horsemeat; once the Church had consolidated its power, the allowance was discontinued. Horsemeat is still popular in Iceland and is sold and consumed in the same way as beef, lamb and pork.
In Islam, opinions vary as to the permissibility of horse meat. Some cite a hadith forbidding it to Muslims, but others doubt its validity and authority. Wild horses are generally seen as halal while domesticated horses and asses are viewed as forbidden. Various Muslim cultures have differed in the attitude in eating the meat. Historically, Turks and Persians have eaten the meat, while in North Africa this is rare.
In Canada, horse meat is legal. Most Canadian horse meat is exported to Continental Europe or Japan. In the United States, sale and consumption of horse meat is illegal in California and Illinois. However, it was sold in the US during WW II, since beef was expensive, rationed and destined for the troops. The last horse meat slaughterhouse in USA was closed in 2007. Nevertheless, discarded leisure, sport and work horses are collected and sold at auctions. They are shipped across the country by transporters to the borders of Canada in the north and Mexico in the south to be sold to horse meat butchers. The issue of horse consumption in the UK and Ireland was raised in 2013 with regards to the 2013 horse meat contamination scandal.
Although generally horse meat is also avoided in the Balkans, though not Slovenia, as horse is considered to be a noble animal, or because eating horse meat is associated with war-time famine, it has a small niche market in Serbia.
Of all the taboo meat, human flesh ranks as the most heavily proscribed. In recent times, humans have consumed the flesh of fellow humans in rituals and out of insanity, hatred, or overriding hunger – never as a common part of their diet, but it is thought that the practice was once widespread among all humans.
The consumption of human flesh is forbidden by Hinduism.
Catholics, Lutherans, and Orthodox Christians do not view themselves as engaging in cannibalism when taking communion, although the bread and wine are believed to become "of the same substance" as the body and blood of Christ before being consumed, they remain bread and wine in all ways to the senses. Catholics refer to this as transubstantiation; the Orthodox believe the change occurs, but hesitate to attempt a description of the mechanism, believing it to be a sacred mystery. Most Protestants and other Christian denominations do not believe that transubstantiation (or any actual physical presence of Jesus in any form) occurs at all.
The consumption of human meat is also forbidden in Islam.
In Judaism and within other groups following the Hebrew Torah certain locusts are allowed as food (Leviticus 11:22 and Matthew 3:4). Except for certain locusts and related species, insects are not considered Kosher foods; dietary laws also require that practitioners check food carefully for insects. In Islam, locusts are considered lawful food and do not require ritual slaughtering.
Honey is concentrated nectar and honeydew which has been regurgitated by bees. It is considered kosher even though honey bees are not, an apparent exception to the normal rule that products of an unclean animal are also unclean. This topic is covered in the Talmud and is explained to be permissible on the grounds that the bee does not originally make the honey, the flower does, while the bees store and dehydrate the liquid into honey. This is different to royal jelly, which is produced by bees directly and is considered non-Kosher.
Some vegans also avoid honey as they would any other animal product.
Kangaroo meat is banned in the U.S. state of California. The ban was first imposed in 1971; a moratorium was put in place in 2007, allowing the importation of the meat, but the ban was re-enacted in 2015.
Islamic, Judaic law (including Noahide Law), and some laws of some Christians forbid any portion that is cut from a live animal (Genesis 9:4, as interpreted in the Talmud, Sanhedrin 59a). Judaism restricts this prohibition to land animals and birds; fish do not require kosher slaughter, but must first be killed before being eaten. However in the case of a ben pekuah where a live offspring is removed from the mother's womb, these restrictions do not apply.
Examples of the eating of animals that are still alive include eating live seafood, such as "raw oyster on the half shell" and ikizukuri (live fish). Sashimi using live animals has been banned in some countries. Practices such as Ikizukuri are prohibited in Judaism under the law forbidding unnecessary pain to animals.
Monkey brains is a dish consisting of, at least partially, the brain of some species of monkey or ape. In Western popular culture, its consumption is repeatedly portrayed and debated, often in the context of portraying exotic cultures as exceptionally cruel, callous, and/or strange.
Monkeys are revered animals in India, largely because of the monkey god Hanuman. Most Hindus are vegetarian and do not eat any kind of meat, including monkeys. Meat eating Indians also do not kill or eat monkeys. Killing and eating monkeys (or other animals which are considered wild) is a taboo and illegal in India.
Offal is the internal organs of butchered animals, and may refer to parts of the carcass such as the head and feet ("trotters") in addition to organ meats such as sweetbreads and kidney. Offal is a traditional part of many European and Asian cuisines, including such dishes as the steak and kidney pie in the United Kingdom or callos a la madrileña in Spain. Haggis has been Scotland's national dish since the time of Robert Burns. In northeast Brazil, there is a similar dish to haggis called "buchada", made with goats' stomach.
Except for heart, tongue (beef), liver (chicken, beef, or pork), and intestines used as natural sausage casings, organ meats consumed in the U.S. tend to be regional or ethnic specialities; for example, tripe as menudo or mondongo among Latinos and Hispanos, chitterlings in the Southern United States, scrapple on the Eastern Seaboard, fried-brain sandwiches in the Midwest, and beef testicles called Rocky Mountain oysters or "prairie oysters" in the west. In Argentina and other Spanish language countries bull's testicles are served as huevos de toro or 'bull's eggs'.
In some regions, such as the European Union, brains and other organs which can transmit bovine spongiform encephalopathy ("mad cow disease") and similar diseases have now been banned from the food chain as specified risk materials.
Although eating the stomach of a goat, cow, sheep, or buffalo might be taboo,[where?] ancient cheesemaking techniques utilize stomachs (which contain rennet) for turning milk into cheese, a potentially taboo process. Newer techniques for making cheese include a chemical process with artificial rennet. This means that the process by which cheese is made (and not the cheese itself) is a factor in determining whether it is forbidden or allowed by strict vegetarians.
United States Department of Agriculture (USDA) data reports pork as the most widely eaten meat in the world. Consumption of pigs is forbidden in Islam, Judaism and certain Christian denominations, such as Seventh-day Adventists. This prohibition is set out in the holy texts of the religions concerned, e.g. Qur'an 2:173, 5:3, 6:145 and 16:115, Leviticus 11:7-8 and Deuteronomy 14:8. Pigs were also taboo in at least three other cultures of the ancient Middle East: the Phoenicians, Egyptians and Babylonians. In some instances, the taboo extended beyond eating pork, and it was also taboo to touch or even look at pigs.
The original reason for this taboo is debated. Maimonides seems to have thought the uncleanness of pigs was self-evident, but mentions with particular aversion their propensity to eat feces. In the 19th century some people attributed the pig taboo in the Middle East to the danger of the parasite trichina, but this explanation is now out of favour. James George Frazer suggested that in ancient Israel, Egypt and Syria, the pig was originally a sacred animal, which for that reason could not be eaten or touched; the taboo survived to a time when the pig was no longer regarded as sacred, and was therefore explained by reference to its being unclean.
More recently, Marvin Harris posited that pigs are not suited for being kept in the Middle East on an ecological and socio-economical level; for example, pigs are not suited to living in arid climates and thus require more water than other animals to keep them cool, and instead of grazing they compete with humans for foods such as grains. As such, raising pigs was seen as a wasteful and decadent practice. Another explanation offered for the taboo is that pigs are omnivorous, not discerning between meat or vegetation in their natural dietary habits. The willingness to consume meat sets them apart from most other domesticated animals which are commonly eaten (cattle, sheep, goats, etc.) who would naturally eat only plants. Mary Douglas has suggested that the reason for the taboo against the pig in Judaism is three-fold: (i) it transgresses the category of ungulates, because it has a split hoof but does not chew the cud, (ii) it eats carrion and (iii) it was eaten by non-Israelites.
Most Lebanese Christians also do not eat pork, although religiously they are allowed to do so. However, because the ancestors of the Lebanese Christians were Phoenicians, they still think that pigs are filthy.
The book of Leviticus in the Bible classifies the rabbit as unclean because it does not have a split hoof, even though it does chew and reingest partially digested material (equivalent to "chewing the cud" among ruminants). The consumption of rabbit is allowed in Sunni Islam, and is popular in several majority-Sunni countries (e.g. Egypt, where it is a traditional ingredient in molokheyya), but it is forbidden in the Ja'fari jurisprudence of Twelver Shia Islam.
Rats and mice
In Ghana, Thryonomys swinderianus locally referred to as "Akrantie", "Grasscutter" and (incorrectly) as "Bush rat" is a common food item. The proper common name for this rodent is "Greater Cane Rat", though actually it is not a rat at all and is a close relative of porcupines and guinea pigs that inhabit Africa, south of the Saharan Desert. In 2003, the U.S. barred the import of this and other rodents from Africa because of an outbreak of at least nine human cases of monkeypox, an illness never before been seen in the Western Hemisphere.
Consumption of any sort of rodent, or material originating from rodents, is forbidden in Judaism and Islam.
Islam strictly forbids the consumption of reptiles, such as crocodiles and snakes. Eating reptiles is also forbidden in Judaism. In other cultures, foods such as alligator are treasured as delicacies, and the animals are raised commercially.
In certain versions of Jainism, Buddhism and Hinduism, consumption of vegetables of the onion genus are restricted. Adherants believe that these excite damaging passions. Many Hindus discourage eating onion and garlic along with non-vegetarian food during festivals or Hindu holy months of Shrawan, Puratassi and Kartik. However, shunning onion and garlic is not very popular among Hindus as compared to avoiding non-vegetarian foods, so many people do not follow this custom.
Kashmiri Brahmins forbid "strong flavored" foods. This encompasses garlic, onion, and spices such as black pepper and chili pepper, believing that pungent flavors on the tongue inflame the baser emotions.
Jains not only abstain from consumption of meat, but also do not eat root vegetables (such as carrots, potatoes, radish, turnips, etc) as doing so kills the plant and they believe in ahimsa. In the hierarchy of living entities, overwintering plants such as onions are ranked higher than food crops such as wheat and rice. The ability of onions to observe the changing of the seasons and bloom in spring is believed to be an additional 'sense' absent in lower plants. The amount of bad karma generated depends on the number of senses the creature possesses and so it is thought prudent to avoid eating onions. This also means that in some North Indian traditions, effectively all overwintering plants are considered taboo.
In Yazidism, the eating of lettuce and butter beans is taboo. The Muslim religious teacher and scholar, Falah Hassan Juma, links the sect's belief of evil found in lettuce to its long history of persecution by Muslims and Christians. Historical theory claims one ruthless potentate who controlled the city of Mosul in the 13th century ordered an early Yazidi saint executed. The enthusiastic crowd then pelted the corpse with heads of lettuce.
The followers of Pythagoras were vegetarians, and "Pythagorean" at one time came to mean "vegetarian". However, their creed prohibited the eating of beans. The reason is unclear: perhaps the flatulence they cause, perhaps as protection from potential favism, but most likely for magico-religious reasons.
Vegetables like broccoli and cauliflower, while not taboo, may be avoided by observant Jews and other religions due to the possibility of insects or worms hiding within the numerous crevices. Likewise, fruits such as blackberries and raspberries are recommended by kashrut agencies to be avoided as they cannot be cleaned thoroughly enough without destroying the fruit.
The common Egyptian dish mulukhiyah, a soup whose primary ingredient is jute leaves (which leaves did not have any other culinary purpose), was banned by the Fatimid Caliph Al-Hakim bi-Amr Allah sometime during his reign (996-1021 CE). The ban applied specifically to mulukhiyah, and also to other foodstuffs said to be eaten by Sunnis. While the ban was eventually lifted after the end of his reign, the Druze, who hold Al-Hakim in high regard and give him quasi-divine authority, continue to respect the ban, and do not eat mulukhiyah of any kind to this day.
Sunni Islam permits Muslims to consume the flesh of whales that have died of natural causes as there is a famous Sunni hadith which cites Muhammad's approval of such. Whale meat is forbidden (haram) in Shia Islam as whales do not have scales. In much of the world whale meat is not eaten due to the endangerment of whales but it is not traditionally forbidden.
Some religions – including Buddhism, Islam, Jainism, Rastafari movement, Baháʼí Faith, and various branches of Christianity such as the Baptists, the Church of God In Christ, Methodists, the Latter-day Saints, Seventh-day Adventists and the Iglesia ni Cristo – forbid or discourage the consumption of alcoholic beverages.
The Hebrew Bible describes a Nazirite vow (Numbers 6:1-21) that includes abstinence from alcohol, specifically wine and probably barley beer (according to the Septuagint translation and the Bauer lexicon: σικερα, from the Akkadian shikaru, for barley beer). The New JPS translation is: "wine and any other intoxicant". Other versions such as the NIV prohibit both alcohol and all alcohol derived products such as wine vinegar. There is no general taboo against alcohol in Judaism.
There are also cultural taboos against the consumption of alcohol, reflected for example in the Teetotalism or Temperance movement. There is also something of a cultural taboo in several countries, against the consumption of alcohol by women during pregnancy for health reasons, as seen, for example, which in the Maternity Protection Convention, 2000 by ILO.
Some religions prohibit drinking or eating blood or food made from blood. In Islam the consumption of blood is prohibited (Haraam). Halal animals should be properly slaughtered to drain out the blood. Unlike in other traditions, this is not because blood is revered or holy, but simply because blood is considered ritually unclean or Najis, with certain narratives prescribing ablutions (in the case of no availability of water) if contact is made with it. In Judaism all mammal and bird meat (not fish) is salted to remove the blood. Jews follow the teaching in Leviticus, that since "the life of the animal is in the blood", no person may eat (or drink) the blood. Iglesia ni Cristo and Jehovah's Witnesses prohibit eating or drinking any blood.
According to the Bible, blood is only to be used for special or sacred purposes in connection with worship (Exodus chapters 12, 24, 29, Matthew 26:29 and Hebrews). In the first century, Christians, both former Jews (the Jewish Christians), and new Gentile converts, were in dispute as to which particular features of Mosaic law were to be retained and upheld by them. The Apostolic Decree suggested that, among other things, it was necessary to abstain from consuming blood:
For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things; That ye abstain from meats offered to idols, and from blood, and from things strangled, and from fornication: from which if ye keep yourselves, ye shall do well, Fare ye well.
Coffee and tea
"Hot drinks" are taboo for members of The Church of Jesus Christ of Latter-day Saints. The term is misleading as the ban is applied exclusively to coffee and tea (i.e. not hot cocoa or herbal teas). The Word of Wisdom, a code of health used by church members, outlines prohibited and allowed substances. While not banned, some Mormons avoid caffeine in general, including cola drinks. Members of the Seventh-day Adventist Church also generally avoid caffeinated drinks.
There is a widely reported story, possibly apocryphal, that around the year 1600, some Catholics urged Pope Clement VIII to ban coffee, calling it "devil's beverage". After tasting the beverage, the Pope is said to have remarked that the drink was "... so delicious that it would be a sin to let only misbelievers drink it." (See the History of coffee.)
Human breast milk
Kashrut, the Jewish food regulations, classify all permissible foods into three categories: meat products, dairy products, and others, which are considered to be neither (including not just vegetable products, but also fish and eggs). A meal or dish may not contain both meat and dairy products.
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The conversion of the whole substance of the bread and wine into the whole substance of the Body and Blood of Christ, only the accidents (i.e. the appearances of the bread and wine) remaining
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