If you've gone to all the trouble of baking a homemade cake or batch of cookies, only to find they came out flat or dense, your leavening agent might be to blame. While baking powder and baking soda ...
How long they really last may surprise you. If you've gone to all the trouble of baking a homemade cake or batch of cookies, only to find they came out flat or dense, your leavening agent might be to ...