Icing sugar, also known as powdered sugar or confectioner's sugar, is a finely ground sugar produced by milling granulated sugar into a powdered state. It usually contains a small amount of an anti-caking agent, such as corn starch, potato starch, or tricalcium phosphate, to absorb moisture, prevent clumping, and improve flow
. Icing sugar is commonly used in baking to make icing, frosting, and other cake decorations. It is also often dusted onto baked goods to add a subtle sweetness and delicate decoration
