How To Tell if Your Baking Powder Is Fresh, According to a Pastry Chef

Test your baking powder’s freshness with a simple hot water fizz test. Fresh baking powder ensures light, fluffy baked goods ...
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Not sure if baking powder’s still good? Here’s the test

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 ...
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COL Easy home test exists for baking powder

Dear Heloise: I have used your hint for testing yeast for several years and was wondering if there is a test for baking powder. -- Frances Altieri, Fort Pierce, Fla. There is an easy home check to be ...