Question: can you use baking powder and cream of tartar together?
Answer: Cream of tartar makes a good substitute for baking powder in certain baking applications; in fact, you can make a form of baking powder by combining cream of tartar with baking soda. Combine 1/4 teaspoon of baking soda with 1/2 teaspoon cream of tartar and use that to replace a teaspoon of baking powder.