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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 is acidic so it would significantly retard bacteria growth. Using vinegar to preserve food is called pickling. It usually involves removing water from the food by soaking i â¦ t in a brine (salt water) solution and then allowing the food to soak the vinegar back into it.Many foods can be pickled such as fish (herring) and cucumbers.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.