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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.
Apple cider vinegar is a kind of vinegar that is made from apples. It has a pale orange/yellow color, and itâs used regularly in cooking, but many people also use it as a preservative. The vinegar is great for making chutneys and marinades, but many people dislike it for its bitter taste. The cause of this bitter taste is the addition of bacteria and yeast to apple juice. It soon ferments and becomes an acidic vinegar. However, the taste doesnât always have to matter â in fact, many people use apple cider vinegar for non-cooking purposes.