You can easily make your own baking powder. Often commercially bought baking powder has wheat gluten in it. This recipe is gluten free, wheat free, and very easy to make using ingredients that should be readily available at your grocery store. It may be hard to find gluten-free baking powder in the store, or you may end up paying more for it. But it's so quick, inexpensive and simple to buy these 3 ingredients (you may already have some of them in your kitchen), and make your own. So if you want baking powder that's vegan and gluten-free, here's your recipe…
2 parts Cream of Tartar
1 part baking soda
1 part cornstarch
Stir and sift all ingredients together and you've got baking powder. Use as normal.