Add Yahoo as a preferred source to see more of our stories on Google. The baking powder sold in most American grocery stores is labeled "double-acting" and is not interchangeable with baking soda, but ...

Mix up this baking essential — or a good substitute — in minutes. Baking powder is a blend of a base — sodium bicarbonate, also known as baking soda — mixed with an acid — often cream of tartar — and ...