Duncan Hines
4 MIX POUCHES & 4 FROSTING POUCHES: NET WT 12.7 OZ (362g)
Leavening, often called a leavening agent, is a term for any number of substances in a dough or batter that creates carbon dioxide bubbles that lighten the finished product. These can include everything from yeast to baking soda, to whipping egg whites, to steam, and more.