the igbo ethnic group of nigeria has no explicit prohibitions against eating blood, but most regard it with disgust and refuse to eat any meat perceived as "bloody" or undercooked (such as raw meat in sushi or steak prepared raw, rare, or medium). goats, cattle, and other animals slaughtered in the traditional igbo manner are dispatched with a single cut across the neck and then most or all of the blood is allowed to slowly drain from the wound. this practice may have been influenced by the igbo jewish community that apparently predates contact with europe. many igbos who buy butchered, packaged meat from groceries and supermarkets are in the habit of washing the blood from the meat with water before preparing it.