Baking soda and baking powder are both used in baking, but they are not interchangeable. Baking soda and baking powder are both common leavening agents for quick breads, cakes, cookies ...
you usually can't achieve stellar results without baking soda or baking powder. Sometimes a recipe will call for both, other times it lists one, but rarely does it omit the category of leavening ...
You can make your own baking powder by combining 15ml/1tbsp bicarbonate of soda with 30ml/2tbsp cream of tartar. Measure carefully as too much or too little can upset a recipe’s balance.
Can baking soda replace baking powder in recipes? In some cases, baking soda can be used as a substitute for baking powder by combining it with an acidic ingredient like cream of tartar. 5.