Icing (food) desired colour. Sprinkles, colouring mist, edible ink designs, or other decorations are often used on top of icing. The simplest icing is a glacé icing, containing powdered sugar and water. This can be flavoured and coloured as desired, for example, by using lemon juice in place of the water. More complicated icings can be made by beating fat into powdered sugar (as in buttercream), by melting fat and sugar together, by using egg whites (as in royal icing), and by adding other ingredients such as glycerin (as in fondant). Some icings can be made from combinations of sugar and cream
Fondant icing is similar to rolled fondant but with a stiffer consistency, which makes it a good sculpting material. "Sugar paste" or "gum paste" is similar to rolled fondant, but hardens completely—and therefore is used for bigger cake decorations, such as bride and groom figures, bigger flowers, etc. Sugar paste is made mainly of egg whites and powdered sugar. Poured fondant is formed by supersaturating water with sucrose. More than twice as much sugar dissolves in water at the boiling point as at room temperature. After the sucrose dissolves, if the solution is left to cool undisturbed, the sugar remains dissolved in