What is Suet?

Suet is a hard white fat used for; Christmas pudding, certain pastries and mincemeat.  It is found around the kidneys and other offal of beef, pork or lamb.  It has a much higher melting point than other fats which lends certain properties in terms of cooking or baking that cannot be replicated by butter or lard.  There is a brand of Suet called Atora that also provides a vegetarian alternative.