We just had our third frost here in Maine, which means people are starting to sniffle and sneeze. It also means that it’s time to make a new batch of fire cider—an age-old tonic for human health during cold and flu season. There’s really no telling exactly when the first fire cider was made. I think it’s a safe bet, though, that it was shortly after people realized if you forget a cask of wine in the cellar, it turns into (something we now know...