Royal icing is a great frosting recipe for cakes and cookies needing detailed decorations that last a long time because it dries very hard. Also works well for decorating gingerbread houses. It works as the glue to hold the house together and for attaching other decorations.
A very fine form of sugar that is used to make a Fondant, a dessert icing for cakes and sweets, or a garnish to be sprinkled lightly on plates or over fresh berries.