Well, I don't know if this will help you but when I was in the kitchen one day, I was looking for something to eat. And while looking, I managed to come across some grapes that had seemed to not have been eaten for quite a while. They smelt like wine and my dad had told me that grapes are made from wine. So I suggest maybe preserving them will make wine?
Sorry, it's just what occurred, not sure if that's actually what happens in the process of making wine.
But I hope it helps.
And yes, search google too. AHHA.