Buy a quality brand or make your own: Aluminum-free baking powders will be clearly labeled. If you can't find an option on ...

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WHAT IT IS: Alum powder (crystallized potassium aluminum sulfate) is an astringent white substance commonly used in pickling recipes to retain crispness. You can find it in the spice aisle of grocery ...

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Some baking powders contain aluminum-based acids — and they can affect flavor. Here’s what to know before you bake.