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?

Dear Heloise: I have used your hint for testing yeast for several years and was wondering if there is a test for baking powder. -- Frances Altieri, Fort Pierce, Fla. There is an easy home check to be ...

Baking powder is more than just a pantry staple—it’s the science behind fluffy pancakes, airy cakes, and tender biscuits. From its three core ingredients to the difference between single-acting and ...