If there’s one thing you ‘re walking away from today ‘s lesson, let it be this: baking powder and baking soda are not actually the same thing.
Baking soda is sodium bicarbonate, which requires an acid and a liquid to become activated and help baked goods rise. Baking powder includes sodium bicarbonate, as well as an acid. It only needs a liquid to become activated. Besides, you can substitute baking powder with 1 part baking soda and 2 part cream of tartar.