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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.
The most common vinegars found in American kitchens are white distilled and apple cider, but the more adventurous may also use red wine vinegar; white wine vinegar; rice vinegar; or gourmet varieties, such as 25-year-old balsamic vinegar or rich black fig vinegar. Vinegar can be made from just about any food that contains natural sugars.