Does Baking Powder Go Bad? How Long Does Baking Powder Last?

Baking powder is a common ingredient in baking recipes, but does it go bad? What happens if you leave it out too long? Baking powder contains leavening agents such as sodium bicarbonate baking soda or potassium carbonate potassium bicarbonate. These substances react with water to create carbon dioxide gas, which causes baked goods to rise….