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How to test baking soda and baking powder to see if they’re expired

When your pancakes come out too flat or your cake doesn't rise, your leavener might have lost its oomph. Here's how to do a ...
Yahoo

Does Baking Soda Go Bad? Yes, But You Can Still Use It—Here's How

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 ...