Spoonful of baking soda over cup of water next to bowl of baking soda
Food - Drink
The Simple Addition To Turn Baking Soda Into Baking Powder
The main difference between baking soda and powder is that baking powder contains acid, while baking soda has none. Therefore, acid is the key to turning baking soda into powder.
Cream of tartar, also known as potassium bitartrate, is the perfect acidic ingredient to activate baking soda and turn it into a baking powder substitute.
Combine two tablespoons of cream of tartar, which is essentially a powdered acid, with one tablespoon of baking soda to create homemade baking powder.
Cream of tartar is also good to have on hand for stabilizing ingredients like whipped egg whites. It can even keep vegetables bright in color after they've been preserved.