Been wondering about this. I read somewhere that drinking mead while its fermenting was common practice in the old days.
However wouldnt it make you susceptible to developing a illness where your stomach begins to brew its own alcohol which causes you to be perpetually and mildly drunk?
Autobrewery syndrome is rare and probably has more to do with your diet and antibiotic use than consuming a few actively fermenting drinks.
Some drinks like pulque are traditionally drunk that way and that’s why they can’t be shipped long distances. So if its been done by other cultures for thousands if years, I’m not a doctor, but I’m gonna wager its fairly safe.
Dang, I would have loved to have that syndrome 10 years ago. It certainly would have saved me a lot of money.