The noun offal can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be offal. However, in more specific contexts, the plural form can also be offals e.g. in reference to various types of offals or a collection of offals.

How do you use offal?

Many people unwittingly tuck into offal every time they eat a sausage (the skins are usually made from sheep, pig or ox intestines), or spread chicken liver pâté or foie gras on toast, yet shudder at the thought of heart or brain. In fact, the less popular cuts can be delicious, as well as nutritious.

Why is it called offal?

Originally named after "garbage" or literally the part of the animal that would "fall off" when butchered, the offal cuts of meat have, hands down, the worst PR in history.