10 Best Baking Powder Substitutes That Work Like a Charm

This mixture is basically like making your own baking powder right at home. Cream of tartar, which is sold in most baking isles, adds acidity to the baking soda to help baked goods rise. For 1 tablespoon baking powder, mix 2 teaspoons cream of tartar with 1 teaspoon baking soda (add 1 teaspoon cornstarch if you're making a big batch—it prevents the mixture from caking, but it's not necessary).