The Ingredient Mistake That Causes Deflated Cakes - Chowhound

First, a quick primer on how baking soda and baking powder actually work. Baking soda, technically known as sodium bicarbonate, is a chemical with a high pH, making it alkaline. When sodium bicarbonate is mixed with an acid, it reacts to form bubbles of carbon dioxide — think of the classic volcano experiment you might have done in elementary school science class. Those bubbles are what make cakes rise and have a…