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Vinegar is used to preserve a wide variety of vegetables and fruits, along with meats, fish and eggs. Preserving food with vinegar is called pickling. A short list of foods â¦ that are commonly pickled would include pigs' feet, herring, beets, cucumbers, onions, olives, peppers, peaches, pears, and watermelon rind.o preserve food the pioneers used salt, and vinegar and they could have sun dried the food and they might have had root cellars to keep the preserved food edible and cool.
In fact, one of the most popular claimsâthat drinking a small amount of apple cider vinegar before a meal helps curb appetite and burn fatâhas little scientific support, according to the Mayo Clinic. So we did some digging and found some valid, science-backed benefits to vinegar that are worth sharing.