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 ...
If you’ve walked down the baking aisle and noticed labels that advertise “aluminum-free” baking powder, you might’ve raised an eyebrow. Why would there be aluminum in baking powder? To be clear, ...
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