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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.
Ammonia and vinegar are often used as cleaning products. Vinegar is created by fermentation, which turns natural sugars into acids. That acidic quality allows it to break down grease, germs and moldy food particles, cutting through them very quickly. Grocery stores sell vinegar with a specific amount acidic content, as dictated by the federal government.