FONDANT:

Rolled fondantfondant icing, or pettinice is commonly used to decorate wedding cakes and other cakes. It includes gelatin (or agar in vegetarian recipes) and food-grade glycerine, which keeps the sugar pliable and creates a dough-like consistency. It can also be made using powdered sugar and melted marshmallows. Rolled fondant is rolled out like a pie crust and used to cover the cake. Commercial shelf-stable rolled fondant often consists principally of sugar and hydrogenated oil.