There's a colonial-era beverage here in New England called Switchel or Haymaker's Punch.

It's apple cider vinegar, blackstrap molasses (or apple cider syrup) and water. It's made of what we had, quenches the thirst (haymaking is hot, sweaty work), and apparently helps recovery after work like that.

I discovered a farmer selling Switchel, as ACV/ACS syrup, to be added to water - more than a few decades ago. My then-current post-workout drink (sounds like alligator) had been acquired by a soda company and the "new and improved" version was sickly sweet with sugar. This punch, with a pinch of salt, made a good replacement for the original version. I've been drinking it since then, eventually stopped bothering with any sweetener at all.

Possibly interesting trivia: the Roman Legions drank vinegared water while on campaign. Given how many Colonials had a strong education in the classics, I have to wonder if that's where they got the idea...(?) Pretty sure it's mentioned in Caesar's writings (selections of which were in then-common Latin primmers, mostly due to his clear writing style). No idea if it's mentioned in those selections, though...