Offal is the entrails and internal organs of a butchered animal. The word does not refer to a particular list of organs, but includes most internal organs other than muscles or bones. Depending on the cultural context, offal may be considered as waste material that is thrown away, or as delicacies that command a high price. Offal not used directly for human or animal food is often processed in a rendering plant, producing material that is used for animal feed, fertilizer or fuel.
The traditional Scottish haggis consists of sheep stomach stuffed with a boiled mix of liver, heart, lungs, rolled oats and other ingredients. In the UK Midlands faggots are made from ground or minced pig offal (mainly liver and cheek), bread, herbs and onion wrapped in pig's caul. Steak and kidney pie (typically featuring veal or beef kidneys) is widely known and enjoyed in Britain. Brawn is the British term for "head cheese" or the collection of meat and tissue found on an animal's skull (typically a pig) that is chilled and set in gelatin.
In Greece, splinantero consists of liver, spleen and small intestine, roasted over an open fire. A festive variety is kokoretsi: pieces of lamb offal (liver, heart, lungs, spleen, kidney and fat) are pierced on a spit and covered by washed small intestine wound around in a tube-like fashion. Kokoretsi is then roasted over coal fire. It is a traditional Easter feature food. Another traditional Easter food is Mageiritsa: a soup made with lamb or kid's offal and lettuce in a white sauce. Tzigerosarmas and Gardoympa are two varieties of splinantero and kokoretsi made in different sizes and with extra spices to improve the taste.
In Italy consumption of entrails and internal organs is quite widespread, among the most popular preparations are fried or stewed brain, boiled intestines (Trippa), often served with tomato sauce, lampredotto (one of the cow intestines), boiled in broth and seasoned with parsley sauce and chili, liver (stir-fried with onions, roasted), kidneys, heart and coronaries (coratella or animelle), head, eyes, testicles of pig, several preparations are based on chicken entrails.
In Brazil, churrasco often includes chicken hearts, roasted in a big skewer. The typical feijoada often contains pork trimmings (ears, feet and tail). Gizzard stews, fried beef liver and beef stomach stews are also popular dishes.
In Japan chicken offal is often skewered and grilled over charcoal as yakitori, to be served alongside drinks in izakayas (Japanese food-pubs).
In Korea and Japan, offal (especially from cattle) is often served in Korean barbecue restaurants. See bulgogi (in Korea) and yakiniku (in Japan).
Offal is usually very high in purines. People suffering from gout should avoid offal in their diet.
The practice of feeding raw offal to work dogs on farms and ranches is known to spread echinococcosis.