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 ...
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 ...