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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.
The only research Iâve seen suggesting that vinegar may help reduce fat was a study published in the July 8, 2009, issue of the Journal of Agricultural and Food Chemistry. Japanese researchersreported that they had put laboratory mice on a high-fat diet and fed them acetic acid, the main component of vinegar.