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Definition

Alum; any of various double sulfate salts.

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How it's used

Alum is primarily recognized in culinary contexts for its role as a firming agent or leavening aid in traditional deep-fried snacks. It is rarely discussed outside of professional cooking or food chemistry, so it is not a term used in everyday casual conversation unless one is specifically talking about recipes.

Examples

You need to add a little alum to make fried dough sticks crispy enough.

Related words

Common phrases

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