Which British food is a savoury pudding made mainly from blood and oatmeal?

Black pudding is a British savoury pudding made mainly from blood and oatmeal.

It is a type of blood sausage, traditionally prepared with pork blood, pork fat or suet, oatmeal and seasonings. The mixture is cooked in a casing and later sliced and fried, grilled or baked. Recipes differ across Britain and Ireland, with some using barley or other cereals instead of oatmeal.

Black pudding is strongly associated with the full English breakfast, where it may be served alongside eggs, bacon, sausages and toast. The Stornoway black pudding from Scotland has protected geographical status.

Black pudding is often confused with haggis because both are traditional British foods made with offal-related ingredients. Haggis is a pluck-based pudding with oatmeal and spices, while black pudding is defined by blood as its principal ingredient.