Vinegar. You probably don’t know it, but it is one of the oldest flavoring agents in history. In fact, residue from vinegar has been detected in vessels that go as far back as 3000 BC.
Since the 1950s, apple cider vinegar, a variation of this acetic acid that is derived from apples, has been a popular liquid that has been used for its health benefits. Dr DeForest Clinton Jarvis, the author of Folk Medicine, popularized apple cider vinegar (ACV, as it is often referred to) when he shared its amazing health benefits.