A glaze in cooking is a coating of a glossy, often sweet, substance applied to food. Egg whites and icing are both used as glazes. For example, doughnut glaze is made from a simple mixture of confectioner's sugar and water. A typical medieval English glaze was the 'Elizabethan' glaze made from lightly beaten egg white and sugar used predominantly on pastries of the time. Glazes can also be made from fruit and are often applied to pastries.