To make the carbon dioxide, baking soda requires moisture and an acidic ingredient to react with. Baking powder is nothing more than baking soda with dry acidic ingredients added. When it's moistened by the batter and heated, it creates a similar reaction. read more
Most doughnuts are like a cake which needs baking powder. The yeast (raised) doughnuts use yeast like bread. You can taste the difference yeast ones are fluffy and puffy with a winy yeast taste. read more
Cake doughnuts are made from a looser batter/dough that is leavened with chemical leavener (baking powder or baking soda). If the batter is loose, these doughnuts may need to be piped rather than cut. read more
CHOCOLATE-GLAZED DOUGHNUTS If you wish to glaze the doughnuts, mix together 1/2 cup sugar and 2 tablespoons unsweetened cocoa powder, stirring well to get rid of any lumps. Transfer to a small saucepan, add 1 cup milk, and cook, stirring, until the mixture is thick and smooth. read more