Vinegar is a sour liquid made from fermented alcohol, used in cooking, pickling, and salad dressings.
From Old French “vinaigre,” literally “sour wine,” from “vin” (wine) and “aigre” (sour). It began as wine that had gone bad but turned out to be very useful in food and preservation.
Vinegar is basically alcohol that’s been taken one step further by special bacteria that turn it into acid. That sour power is strong enough to preserve food and even clean surfaces.
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