If your favorite baking recipes suddenly stop turning out well, don’t panic! There may be a simple answer—your leavener may be expired. (By the way, this is the difference between baking soda and ...

Baking powder can remain unchanged in appearance while it loses effectiveness over time due to exposure. Testing its strength is simple and requires only hot water and a teaspoon of baking powder. If ...

Baking some last-minute holiday cookies? Be sure your baking powder and baking soda are fresh and active so they can leaven the dough. Most containers are marked with "use by" dates. To test baking ...

While staying at my grandparents’ house last weekend, I was craving pancakes—until I opened the baking cupboard and found a jar of baking soda with a label from the early 2000s. Could it still work?

How long they really last may surprise you.