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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.
According to medical information, vinegar can be called the healthiest spice. Vinegar does not only lower the risk of high blood pressure, it can also be used for beauty treatments, helps with weight loss, arteriosclerosis, stroke, and other diseases. For patients with high blood pressure, a tablespoon of vinegar diluted with lukewarm water or milk and honey before bed is recommended.