Baking Powder vs. Baking Soda

Difference between baking powder and baking soda.

Baking soda and baking powder both leaven baked goods. Baking expert Zach Young explains the difference during his Cranberry Scones class. Baking soda is activated by the acid in the recipe (like yogurt or buttermilk). Baking powder, on the other hand, is typically activated twice: first when it is added to a wet batter and second when you put it in the oven.