No white pudding for me, thank you. Yuck!
Black pudding is a type of blood sausage commonly eaten in Great Britain, Ireland and in other parts of Europe. It is generally made from pork fat or beef suet, pork blood and a relatively high proportion of oatmeal, in some recipes mixed with oat groats and sometimes even barley groats.
White pudding or oatmeal pudding is similar to black pudding, but does not include blood; it consists of pork meat and fat, suet, bread and oatmeal formed into a large sausage (Wikipedia).