Test your baking powder's freshness with a simple hot water fizz test. Fresh baking powder ensures light, fluffy baked goods that hold their shape. Make your own baking powder with baking soda, cream ...

Baking soda loses potency for baking after 6 months, but it's safe and useful for other purposes. Test baking soda with vinegar to check effectiveness; fizz means it's fresh. Use expired baking soda ...

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, ...