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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's medicinal uses have been documented back to ancient times. Photo Credit naito8/iStock/Getty Images. Natural health experts tout drinking apple cider vinegar as a remedy for a host of ailments: from using it as a digestive aid to soothing a sore throat to getting rid of dandruff and foot odor. The dental community, however, warns that apple cider vinegar can be bad for your tooth enamel due to its high acidity. Apple cider vinegar is made from apple juice and fermented twice, becoming apple cider in the first round and then transforming into vinegar in the second.