Close up of a fish head on ice - Westend61/Getty Images For most Americans, the fish's head, collar, and fins are considered waste parts which should be removed and thrown away. According to the U.S.

The leftovers of a succulent whole fish, cooked in a parchment parcel for supper, can be turned into three more delicious dishes: crisp croquettes, a light pâté, and a flavourful kedgeree ...