I assume that the wine in Jesus time was identical to what was going around the Roman Empire. Wine in those days was made to high alcoholic content, same as the wines we buy today. HOWEVER, no one really drunk it like that, it was always diluted with water before being drunk. If people want to use the fact that Jesus turned water into wine as an excuse to get drunk, then they are idiots. I see nothing wrong in consuming some alcahol in amounts which will not make you drunk, but remember your body is a temple!
Actually, in the Roman world of New Testament times, the best wines were those whose alcoholic potency had been removed by boiling or filtration. Pliny, for example, says that "wines are most beneficial (utilissimum) when all their potency has been removed by the strainer." Similarly, Plutarch points out that wine is "much more pleasant to drink" when it "neither inflames the brain nor infests the mind or passions" because its strength has been removed through frequent filtering.Referring to some of the same ancient authors, Barnes says: "Pliny, Plutarch and Horace describe wine as good, or mention that as the best wine which was harmless or innocent—poculis vini innocentis.
In addition, Some Rabbins have even ascribed the downfall of Israel to wine. An example of disapproval is the statement, often repeated with minor variations by different rabbis, which says: "When wine enters into the system of a person, out goes sense, wherever there is wine there is no understanding."This awareness of the harmful effect of alcoholic wine explains why some rabbis recommended the use of boiled wine. Speaking of the latter, the Mishna says: "Rabbi Yehuda permits it [boiled wine as heave-offering], because it improves it [its quality]." "Such a wine," notes Kitto’s Cyclopedia of Biblical Literature, "was esteemed [among the Jews] the richest and best wine." Elsewhere the Talmud indicates that drinking was forbidden to the accompaniment of musical instruments in festive occasions such as weddings (Sotah 48a; also Mishna Sotah 9,11).
Now, Paul says,"Drink no longer water, but use a little wine for thy stomach's sake and thine often infirmities" (1 Timothy 5:23 KJV). So the use of both fermented grape juice and unfermented grape juice appears to have been used during the time of the apostles. But just so that there is no confusion on this passage above here, Paul was not advocating one to get drunk (or even to drink socially here). He was telling believers to drink a little wine in your water to prevent one in having stomach problems because there was no easily accessible purified water back in those days. Now, in Romans chapter 14 we are told not to eat or drink anything that makes our brother to stumble. So we as Christians are allowed to drink in moderation as long as it does not make our brother to stumble. However, make no mistake: A Christian is NOT allowed to get drunk or intoxicated; For drunkards will not inherit the Kingdom of God (1 Corinthians 6:10 KJV). In other words, a Christian has to privately drink in moderation (and not in excess), otherwise an onlooking fellow brother or sister (without their knowledge) could see them and then stumble back into alcoholism; Which is a sin.
Source Used:
Jesus and Wine