According to color classification, wine grape varieties can be divided into red grape varieties and white grape varieties. Due to the fact that most of the pigments come from the fruit peel, wine made from white grape varieties is definitely white wine. But wine made from red grape varieties may not necessarily be red wine. Winemakers can extract different degrees of color according to their needs by controlling the soaking time of grape juice and grape skins. In this way, red grape varieties can be used to make both red and white wines.
