Pork rind is the skin (rind) of a pig. Pork rind is a common ingredient of sausages, which helps to improve their consistency. Fried or roasted pork rind and fat is also a snack. The frying renders much of the fat that is attached to the uncooked rind, causing the cooked product to reduce considerably in size. The product may be known by alternative names, such as pork scratchings or pork crackling in the UK, although the term crackling may also refer to the rind atop a roasted pork joint.
Often a by-product of the rendering of lard, it is also a way of making even the tough skin of a pig edible. In many ancient cultures, animal fats were the only way of obtaining oil for cooking and it was common in many people's diet until the industrial revolution made vegetable oils more common and more affordable.
Microwavable pork rinds are sold which are microwaved in bags that resemble microwave popcorn (although not exhibiting the popping sound) and can be eaten still warm. Pickled pork rinds, on the other hand, are often enjoyed refrigerated and cold. Unlike the crisp and fluffy texture of fried pork rinds, pickled pork rinds are very rich and buttery, much like foie gras.
Health issues 
Since most pork snacks are low in carbohydrates, they are an alternative snack food for those following the Atkins diet. However, pork snacks are often very high in fat and sodium; the fat content of pork rinds is similar to that of potato chips, but the amount of sodium in a serving of pork rinds is nearly five times that of a serving of potato chips. According to Men's Health, a 1 ounce (28 g) serving contains nine times the protein and less fat than is found in a serving of potato chips, which are much higher in carbohydrates. They add that 43 percent of pork rind's fat is unsaturated, and most of that is oleic acid, the same healthy fat found in olive oil. Another 13 percent of its fat content is stearic acid, a type of saturated fat that is considered harmless because it does not raise cholesterol levels.
Regional variations 
Scrunchions is a Newfoundland term for small pieces of pork rind or pork fatback fried until rendered and crispy. They are often used as a flavouring over other foods, such as salt fish and potatoes, and mainly used as a condiment for fish and brewis.
United States 
Pork rinds, sometimes cracklings, is the American name for fried or roasted skins of pigs, geese or other animals, regardless of the status or amount of pork in the snack. Pieces of fried meat, skin, or membrane produced as a byproduct of rendering lard are also called cracklings. Cracklings consist of either roasted or fried pork rind that has had salt rubbed into it and scored with a sharp knife: "a crackling offers a square of skin that cracks when you bite into it, giving way to a little pocket of hot fat and a salty layer of pork meat."
Pork rinds normally refers to a snack food commercially sold in plastic bags. They are made in a two-step process: pork skin is first rendered and dried, and then fried and puffed. These are also called by the Mexican name, chicharrón, in reference to the popular Mexican food.
Pork rinds sold in the United States are occasionally stained with a pink or purple spot. These edible marks are actually USDA stamps used on the skins to mark that they have been inspected, and graded. They are not harmful.
In 2003, sales of pork rinds experienced rapid growth, but they have dropped "by $31 million since 2004, when they reached $134 million, and now make up barely more than 1 percent of the salty snack market."
Mexico is one of the world's largest producers and consumers of pork rinds, known as chicharrón or cuerito. As in Spain, the chicharrón is the rind with fat still attached, whereas the cuerito is a rind with no fat attached.
Cueritos are easily available in Mexico as an antojo and are sold on the streets by vendors. It is usually served with a chile salsa and lime as well as salt. The chicharrón is different, because although it can be bought as an antojo, it is commonly served in homes across Mexico. It can be served in a soup, or as a side dish when served in an intimate and personal setting, like a home. However, chicharrones can be purchased on the street and are usually eaten with a chile salsa.
A popular trend, especially with Mexican snack food brands, such as Barcel and Sabritas, is to package wheat chicharrón. This is usually to create a more healthy version of the popular Mexican food, in an rapidly-growing, weight-conscious environment, as well as to provide Jewish and Muslim customers with a product in which they can also partake.
Chicharon (derived from the Spanish chicharrón; also spelled tsitsaron) is usually bought from balut vendors as pulutan (i.e. appetizer dishes usually eaten with alcoholic beverages). It is prepared by deep-frying the dried pork rind with a little salt. It is sometimes eaten with vinegar (chopped chilies and or soy sauce are added) or with bagoong, lechon liver sauce, or atchara. Chicharong manok, which is made from chicken skin, and chicharong bulaklak (literally 'flower chicharrón', from its distinctive shape) made of pig intestine, are also popular. It is also used as a topping for Pancit Palabok and Pancit Malabon and in preparing Pork Sisig.
Pork rinds used to be a very common food in Vietnam before the Doi moi program in 1986. Due to many economic difficulties in the pre-Doi moi era, cooking oil and meat were still "luxury goods", consequently fat liquid and pork rind became excellent replacements in Vietnamese daily meals. Nowadays, when Vietnam's economy is much better than before, pork rind is no longer a substitute food, but a delicious and special component in many Vietnamese dishes, such as cơm tấm, noodle and snails (bún ốc), noodle soup, etc.
In Vietnamese, pork rind is called tóp mỡ, literally means "dried piece of fat".
Khaep mu (Thai: แคบหมู, pronounced [kʰɛ́p mǔː]), as crispy pork rinds are known in Thai cuisine, are a speciality of the northern Thai city of Chiang Mai. One way of making khaep mu is to first cure the pork skin, with an attached layer of fat, in salt for several days, after which it is soaked in water for a couple of hours. This ensures that the fat cells will expand, resulting in a "puffed skin" after cooking. The slabs of belly fat are then slowly cooked at a low heat in, preferably, lard but other animal fat and vegetable oil can also be used. Similar to a confit, the pork thus treated can be stored. The pork is then cut into smaller pieces and baked in an oven until perfectly crispy. Another method of making the pork rinds again involves salting the pork skin, but instead of soaking it, the skin is hung out to dry in the sun after which it is sliced and deep-fried twice. Yet another way to make this dish in Thailand is to first cut the pork skin into strips, then boil them in water after which they are thoroughly dried before being deep-fried.
Northern Thai people most often eat pork rinds together with different Thai chili pastes, such as nam phrik num (made with grilled green chili peppers) and nam phrik ong (made with dried chili peppers, tomato and minced pork). It can also be eaten as a snack, either on its own, or with nam chim khaep mu, a dipping sauce made with lime juice, fresh chili peppers and a sweet chili paste. It can also figure as an accompaniment to Thai dishes such as Nam ngiao and the famous Thai salad som tam or used crushed as an ingredient, for instance in sa makhuea, a northern Thai salad made with minced pork and Thai eggplant.
United Kingdom 
Pork scratchings is the British name for deep-fried, salted, crunchy pork rind with fat produced separately from the meat. This is then eaten cold. Pork scratchings typically are heavy and hard, have a crispy layer of fat under the skin, and are flavored only with salt. The pig hair is usually removed by quickly burning the skin of the pig before it is cut into pieces and cooked in hot fat. However, this process is not 100% effective, so scratchings occasionally retain a few hairs.
Pork scratchings are sold as a snack food in the same way pork rinds are in the USA. Unlike the physically large, but relatively light bags of 'deep-fried skin without the fat' sold around the world, in the UK they are sold in relatively small bags, which usually weigh between 42g and 90g. Traditionally, they are eaten as an accompaniment to a pint of beer in a pub, just like crisps or peanuts. Scratchings can also be bought from butchers, supermarkets or newsagents. They have been taken to both the North and South Poles on various expeditions, because of their high energy content.
This food is believed to have originated in the West Midlands or Black Country, where they were widely consumed by the working classes. The pork scratching dates back to the 1800s, when families kept their own pigs as a source of food; in order to not waste any element of the pig, due to the scarcity of food, even the offcuts of fat and skin were fried for food.
There are three distinct types. Traditional scratchings are made from shank rind and cooked just once. Pork crackling is also made from shoulder rind, but is fried twice. It is first rendered at a low heat, and then cooked at a higher temperature for a less fatty, crispier result. A more recent development is the pork crunch, which is made from back rind and again double-fried to become a large, puffy snack. Some supermarkets now sell just the layer of skin and fat (no meat), in a raw form for home grilling or roasting, or cooked and ready to eat from hot food counters. The term 'crackling' is also often applied to a twice-cooked variety of pork scratchings.
Rest of Europe 
In Spain, they are called cortezas de cerdo or cueritos when they do not have any solid fat attached, and chicharrones or torreznos when they do. In Catalonia and other Catalan-speaking areas, they are usually called cotnes (sing. cotna), which is the pork rinds per se, when prepared as snacks, whereas llardons (sing. llardó) are a specially prepared, pressed variety. The latter are also known regionally as greixons (sing. greixó) or llardufes (sing. llardufa), among other names.
Portugal has torresmos and couratos, the latter normally on sale at large popular gatherings, such as football matches, usually on a sandwich, and accompanied by beer. In the Netherlands and Belgium, they are known as knabbelspek, which translates to "nibbling bacon". They are usually sold with no flavorings other than salt at most butchers and supermarkets. They are usually eaten as a snack food.
In Denmark, they are known as flæskesvær and can be found in most grocery stores and kiosks. In Austria, they have recently become popular as Schweinekrusten (pig crusts).
See also 
- Ciccioli, an Italian food made from pressed pork scraps
- Gribenes, a Jewish snack made from chicken skin
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