When people search this question, they are probably referring to “black pudding,” which is a type of blood sausage popular in the United Kingdom and Ireland. It’s generally made from pork blood, pork or beef fat, as well as cereal grains or oats. Black pudding is a staple of the traditional “full English breakfast” or “fry-up,” which usually also includes fried eggs, sausages, back bacon, tomatoes, mushrooms, baked beans, potatoes and toast.