Self Rising Flour is one of those ingredients I never seem to have on hand. Making my own has  saved many cakes and scones.
1. Combine all of the ingredients. Then, use a whisk or sieve to mix thoroughly.
Baking powder is a combination of potassium bitartrate (cream of tartar) and sodium bicarbonate (baking soda). Usually cornstarch is added to prevent clumping.
Not only is making your own baking powder cheap and easy, it’s also free of unnecessary additives and aluminum free.