I’ve been making my own baking powder for years. I got the recipe from “Nourishing Traditions” by Sally Fallon.
Conventional baking powder contains aluminum, a known neurotoxin. So unless you’re buying aluminum-free baking powder, this would be an easy health change for you!
1 Tbsp Baking Soda
2 Tbsp Cream of Tartar
2 Tbsp Arrowroot Powder
Simply mix all three ingredients and store in airtight jar. I make a large jar-full that lasts me a while.
If you need to use baking powder right away in a recipe, you can omit the arrowroot and just do 1 part Baking Soda with 2 parts Cream of Tartar.