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 understand that baking powder has a shelf life, and that it can go bad. Can you tell me how long it remains good? — Joe and Kay, via e-mail It does have a shelf life, and here’s how to ...

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 ...

I understand that baking powder has a shelf life, and that it can go bad. Can you tell us how long it remains good? Thank you. Joe and Kay, via e-mail It does have a shelf life, and here's how to test ...

Dear Heloise: I've got a problem! Sometimes my cookies, muffins, cakes and biscuits don't rise enough. I was told that there is a test for checking the freshness of baking powder. I tried this and was ...