Steak tartare or tartar steak is a dish of raw ground (minced) beef or horse meat. it is usually served with onions, capers, mushrooms, pepper, worcestershire sauce, and other seasonings, often presented separately, to be added to taste. it is often served with a raw egg yolk on top. it is similar to the levantine kibbeh nayyeh, the turkish çiğ köfte, and the korean yukhoe. the name tartare is sometimes generalized to other raw meat or fish dishes. in france, a less-common variant called tartare aller-retour is a mound of mostly raw ground meat that is lightly seared on both sides.

Source: Wikipedia