DIY Baking Powder: for every teaspoon of baking soda, add two teaspoons of cream of tartar. I also add a teaspoon of cornstarch or arrow root to avoid the powder clumping. That, and storing my homemade baking powder in an airtight container. You can, of course, make bigger batches so that it’s always handy in your pantry. Just remember that the ratio of baking soda to cream of tartar is 1 : 2 .
If you are not a fan of using cream of tartar, you can substitute it with either lemon juice or vinegar. While I’ve not tried it myself, you can get more details on https://www.myrecipes.com/extracrispy/how-to-make-a-baking-powder-substitute. See how it goes and let us know!
