I'm asking this in complete ignorance on the subject, but is it possible that ancient Greek wine was made through a different process than today's French and California wines? Some type of extremely strong retsina? Something that needed water mixed in just to be palatable as well as safe to drink?
https://en.wikipedia.org/wiki/Ancient_G…fore%20pressing.
https://www.badancient.com/claims/ancient…oman%20cultures.
https://greekreporter.com/2022/05/09/why-ancient-greeks-mixed-wine-with-seawater/