Food historian reveals how salt transformed civilizations and sparked Gandhi’s rebellion

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For 30 cents, you can buy 250 grams of salt at any supermarket — a price so low it’s easy to forget this now-cheap mineral sustained entire civilizations. In this interview, Naomi Duguid, author of The Miracle of Salt: Recipes and Techniques to Preserve, Ferment, and Transform Your Food, says we’ve lost sight of salt’s tra…