You might find this previous thread of interest: How is the wine we drink today different from ancient and classical wine?. In it, /u/Spoonfeedme notes:

The main difference between Roman and modern wines was likely their alcohol content, as both Greek and Roman wines likely had as high as 15% or 20% ABV, compared with 10-12% or so in most modern wines.

Consumption of wine was often very different as well. Mixing water with wine is a practice that is well attested in both Greek and Roman sources, as well as adding everything from spices to honey to increase flavour, and especially, add sweetness. Indeed, Romans were most fond of very sweet wine varieties.

Another resource is: Has beer always tasted pretty much how it tastes today, or would early beers be unrecognizable to us? What about wine?, where /u/Qweniden gives a breakdown on how both beer and wine has changed over the ages.

Additionally, there was (many years ago) a Sunday AMA on The History of Wine, Beer, Cider and Mead. A lot of great content from, again, /u/Qweniden.

• The ratio of wine to water depended on context. If you were quite poor the ratio would be higher. During wine drinking parties there was attendant who was in charge of taking measure of the room's mood and if the event was getting rowdy they would increase the proportion of water or if conversation was lagging they would increase it.

• Both wine and beer has changed tremendously in style over time. Even over the last few decades. In many cases I don't think you would want to drink what was made in ancient times (oxidized wine cut with seawater and flavored with burnt tree resin) or we simply do not know what was in them