This word has always confused me especially now. I have a recipe listing a measure of butter and also a measure of shortening. The definition is butter or lard etc so can I use all butter ??
It is NOT suet....shortening is an American term for margerine for baking purposes. And-yes-you can use all butter..or Stork.....or any other spread that can also be used for baking.
Shortening is "vegetable shortening". In the US we use Crisco or knock-offs of Crisco. It is really thick and looks like lard, but has a different melting point and different baking characteristics than lard or butter or even margarine. If the recipe calls for shortening, you take a chance that using a substitute will alter the consistency of the end product.