Perhaps my favorite proof that Jesus turned water into grape juice (NOT wine) is this:
Jesus never could have made something dead and rotten!
This argument is based on the mistaken idea that fermentation is a process of death and decay. This might have been understandable 150+ years ago, but now we know that fermentation is actually the result of the life process of yeast. Fermentation serves to preserve much of the nutritional value in fruit juices — i.e., it prevents decay.
But just for fun, let’s go ahead and call fermentatation decay. The interesting thing is that the same process of fermentation that transforms sugar into alcohol makes bread rise. Yeast digests carbohydrates and gives off carbon dioxide and alcohol. That makes wine alcoholic, and creates the little voids in bread that makes it fluffy. Why is that interesting? Because on two different occassions, Jesus made bread to feed a multitude (5,000 the first, and 4,000 the second). That’s right — Jesus made something fermented. In fact, he made something that had been fermented, and then cooked. And if that’s no bad enough, He made dead fish on both occasions as well.
If Jesus would make something dead and something fermented in Matthew 14 to feed 5,000 people, and do it again in Matthew 15 to feed 4,000, why in the world should we believe that He could not have made something fermented in John 2?