Icing, often called
frosting in the United States, is a
sweet, often creamy
glaze made of
sugar with a liquid, such as water or milk, that is often enriched with ingredients like
butter,
egg whites,
cream cheese, or
flavorings. It is used to cover or
decorate baked goods, such as
cakes or
cookies. When it is used between
layers of cake, it is called
filling.