Icing Sugar, also known as confectioner's sugar, is very fine powdered sugar. Because it dissolves almost instantly, it is generally used in dishes and recipes that don't require cooking, such as decorative icings, frostings, glazes, sauces,
as well as in fruit juices, milk shakes, and candies. It is often lightly dusted onto a baked good to add light sweetness and subtle decoration. It is mixed with cornstarch to prevent caking,
improve its flowing ability, and to keep it dry. Icing sugar can also be kept in an oversized shaker and served along with other breakfast condiments such as syrup, butter and cinnamon. Many people enjoy sprinkling confectioner's sugar over pancakes, french toast or waffles.