I’ve made my own baking powder for years. An advantage to making your own baking powder is that it will be aluminum free, since most commercial brands include sodium aluminum sulfate which some people claim imparts a metallic flavor.
Here’s What You’ll Need:
- To make baking powder using baking soda, combine two parts cream of tartar (potassium bitartrate) with one part baking soda (sodium bicarbonate).
- If you don’t plan to use it right away, you will want to add some cornstarch to keep it from clumping. It is also a buffer to keep the acid base reaction from happening prematurely. Add one part cornstarch to the cream of tartar and baking soda.
- Store in an airtight container in a cool, dark place.
Recipe from AllRecipes.com