Fondant is a type of sugar paste used for various culinary and decorative purposes. It is made by mixing powdered sugar with water or other liquids, such as milk or corn syrup, to create a smooth and pliable consistency that can be rolled out and cut into different shapes. Fondant is often used to cover cakes and pastries, providing a protective layer and adding decorative details through cutting and molding techniques. It is also commonly used in chocolate work, such as creating sculptures or molds for chocolates.