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?

Years ago, I was at a friend’s house and I wanted to make some chocolate chip cookies. When I went digging in her pantry, I found baking powder that had expired many, many years earlier. I tossed it, ...

Like baking soda, baking powder's main issue with expiration is all about its ability to help your baked goods rise. And there is a wonderful test you can do to see if can rise to the challenge, ...