Blood as food and is sometimes called "liquid meat" because its composition is similar to that of lean meat. Blood collected hygienically can be used for human consumption, otherwise it is converted to blood meal. Special fractions of animal blood are used in human medicine. Blood sausage is any sausage made by cooking animal blood with a filler until it is thick enough to congeal when cooled. Pig or cattle blood is most often used. Typical fillers include meat, fat, suet, bread, rice, barley and oatmeal. Varieties include biroldo, black pudding, blood tongue, blutwurst, drisheen, kishka (kaszanka), morcilla, moronga, mustamakkara, sundae, verivorst, and
Oatmeal or groat. Rolled oats are often used as a key ingredient in granola breakfast cereals (in which toasted oats are blended with sugar and/or nuts and raisins) and granola bars. Rolled oats are also used as an ingredient in oatmeal cookies, oatcakes, British flapjack bars and baked oatmeal dessert dishes such as Apple Brown Betty and apple crisp. Oats may also be added to foods as an accent, as in the topping on many oat bran breads and as the coating on Caboc cheese. Oatmeal is also used as a thickening agent in thick, savoury Arabic or Egyptian meat-and-vegetable soups,