ITALIANO CREAM OF TARTAR 100GITALIANO CREAM OF TARTAR 100G is a white powder found in the baking aisle that is commonly used to help stabilize whipped egg whites in meringues and cakes and give snickerdoodle cookies their signature flavor and texture. It's made from tartaric acid, a byproduct of the winemaking process. Cream of tartar is a powder, similar in appearance to baking soda or baking powder. cream of tartar helps stabilize egg whites for perfect meringues, prevents