The chewy dessert topping made from tartar whites that is often found is called "meringue." Meringue is a sweet mixture made by whipping egg whites, often with the addition of cream of tartar (a form of tartaric acid), and gradually incorporating sugar until stiff peaks form. This mixture is then typically baked or torched to create a crispy outer layer while maintaining a soft and chewy interior. Meringue is commonly used as a topping for pies, tarts, cakes, and other desserts. It can also be shaped into individual portions, such as meringue cookies or pavlova, and enjoyed on its own.