Icing sugar, also known as powdered sugar or confectioner's sugar, is a finely ground sugar that has been processed into a powdery form. It is commonly used in baking and confectionery to make icing, frosting, and other sweet treats. Icing sugar is known for its ability to dissolve easily and create a smooth, creamy texture when mixed with liquids. It is often used to add sweetness and a decorative finish to cakes, cookies, pastries, and other desserts. With its fine texture and ability to easily blend with other ingredients, icing sugar is a versatile ingredient that is essential for creating beautifully finished baked goods.