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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.
It has many, many uses for vinegar. 1  Used as a hair rinse, vinegar neutralizes the alkali left by shampoos. 2  A quarter cup in a quart of water makes a good window cleaner. 3  Fabric softener and static cling reducer â use as you would liquid fabric softener.