My grandfather grew grapes in his yard and he did make wine. However, I am not sure if he used these grapes for wine but they did not look like any vines that I have seen either here in the states or in Italy. His grapes grew on an overhead trellis, forming a natural roof to an open room. The grapes hung about 6-7 feet high. When you picked them you would squeeze the grape and the it would shoot in your mouth and you would be left with the skin in your hand. They were red sweet grapes. Does anyone know what kind of grape this is?