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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.
Vinegar is an acidic liquid produced through fermentation. Vinegar is used in cooking not only for its flavor qualities, but also its chemical properties. Vinegar can be made from a variety of substances, each lending its own unique flavors and qualities. Vinegar is made through the fermentation of ethanol.he acidic nature of vinegar lends a sour or tart flavor to foods, which is desirable when balancing flavors. Vinegar is often used to balance creamy or fatty flavors as with mayonnaise and other salad dressings. In addition to an acidic tartness, vinegar can provide other flavor.