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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.
Unless youâve been living under a rock, chances are youâve heard about the much-touted health benefits of vinegarâin particular, apple cider vinegar. The ancient condimentâthe earliest known use of vinegar dates back more than 10,000 years and has been used as both food and medicineâis enjoying a real resurgence lately.