Oxtail soup is made with beef tails

Oxtail

Oxtail is the culinary name for the tail of cattle. Formerly, it referred only to the tail of an ox or steer, a castrated male. An oxtail typically weighs 2 to 4 lbs. and is skinned and cut into short lengths for sale.Oxtail is a bony, gelatinous meat, and is usually slow-cooked, often stewed or...

. The use of the word "ox

Ox

An ox , also known as a bullock in Australia, New Zealand and India, is a bovine trained as a draft animal. Oxen are commonly castrated adult male cattle; castration makes the animals more tractable...

" in this context is a legacy of nomenclature; no specialized stock of beef animals are used. At least five popular and unrelated versions of oxtail soup exist: a traditional Korean dish, a Chinese dish which is more like a stew, a fried/barbecued oxtail combined with soup variation which is a popular dish in Indonesia

Cuisine of Indonesia

Indonesian cuisine is diverse, in part because Indonesia is composed of approximately 6,000 populated islands. Many regional cuisines exist, often based upon cultural and foreign influences. Indonesian cuisine varies greatly by region and has many different influences...

 where it is called as sop buntut. An ethnic dish of the American South which traces its lineage back to the pre-revolutionary war era, and a thick, rich, gravy

Gravy

Gravy is a sauce made often from the juices that run naturally from meat or vegetables during cooking. In North America the term can refer to a wider variety of sauces and gravy is often thicker than in Britain...

-like soup popular in the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 since the 18th century. Creole

Louisiana Creole cuisine

Louisiana Creole cuisine is a style of cooking originating in Louisiana which blends French, Spanish, Portuguese, Italian, Greek, Asian Indian, Native American, and African influences, as well as general Southern cuisine...

 oxtail soup is made from a tomato base with oxtails, potatoes, green beans, corn, mirepoix

Mirepoix (cuisine)

A mirepoix is a combination of celery , onions, and carrots. Mirepoix, either raw, roasted or sautéed with butter, is the flavor base for a wide number of dishes, such as stocks, soups, stews and sauces...

, garlic, and herbs and spices.

Chinese oxtail soup

Though translated literally as a soup (牛尾汤 niú-wěi-tāng), this version of the dish is somewhere between a soup

Soup

Soup is a generally warm food that is made by combining ingredients such as meat and vegetables with stock, juice, water, or another liquid. Hot soups are additionally characterized by boiling solid ingredients in liquids in a pot until the flavors are extracted, forming a broth.Traditionally,...

 and a stew

Stew

A stew is a combination of solid food ingredients that have been cooked in liquid and served in the resultant gravy. Ingredients in a stew can include any combination of vegetables , meat, especially tougher meats suitable for slow-cooking, such as beef. Poultry, sausages, and seafood are also used...

. One of the defining characteristics of oxtail soup is that it contains a large mass of solid ingredients, rather than ingredients that have been diced or shredded as is the norm with Chinese soup. Chunks of oxtail, potato, carrots, cabbage, tomato, and mushrooms are mixed in water, and salted to taste. The mixture should be heated at a slow boil, to allow time for the ingredients to release their flavors. In particular, the tomatoes and potatoes should largely disintegrate into the water, giving the broth a reddish-orange coloration and thickening it. As to be expected, oils from the oxtail lend most of the flavor. The soup is served with all of the ingredients.

Indonesian oxtail soup

In Indonesian cuisine the oxtail soup is a popular dish. It is made of slices of fried or barbecued oxtail, served in vegetables soup with rich but clear beef broth contains boiled potato, carrot, tomato, leek, celery, and fried shallots. Indonesian sop buntut is seasoned with shallot

Shallot

The shallot is the botanical variety of Allium cepa to which the multiplier onion also belongs. It was formerly classified as the species A. ascalonicum, a name now considered a synonym of the correct name...

, garlic

Garlic

Allium sativum, commonly known as garlic, is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, and rakkyo. Dating back over 6,000 years, garlic is native to central Asia, and has long been a staple in the Mediterranean region, as well as a frequent...

 and native spice

Spice

A spice is a dried seed, fruit, root, bark, or vegetative substance used in nutritionally insignificant quantities as a food additive for flavor, color, or as a preservative that kills harmful bacteria or prevents their growth. It may be used to flavour a dish or to hide other flavours...

s such as black pepper

Black pepper

Black pepper is a flowering vine in the family Piperaceae, cultivated for its fruit, which is usually dried and used as a spice and seasoning. The fruit, known as a peppercorn when dried, is approximately in diameter, dark red when fully mature, and, like all drupes, contains a single seed...

, nutmeg

Nutmeg

The nutmeg tree is any of several species of trees in genus Myristica. The most important commercial species is Myristica fragrans, an evergreen tree indigenous to the Banda Islands in the Moluccas of Indonesia...

, and clove

Clove

Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae. Cloves are native to the Maluku islands in Indonesia and used as a spice in cuisines all over the world...

. A relatively new variant is called Sop Buntut Goreng (fried oxtail soup), where the oxtail is seasoned, fried and served dry, the soup is served in separate bowl.

Canned

Oxtail soup is a popular variety of Heinz

H. J. Heinz Company

The H. J. Heinz Company , commonly known as Heinz and famous for its "57 Varieties" slogan and its ketchup, is an American food company with world headquarters in Pittsburgh, Pennsylvania.Perhaps best known for its ketchup, the H.J...

 soups in the United Kingdom. It was once available canned in the USA from the Campbell Soup Company

Campbell Soup Company

Campbell Soup Company , also known as Campbell's, is an American producer of canned soups and related products. Campbell's products are sold in 120 countries around the world. It is headquartered in Camden, New Jersey...

.