Is there wine in white wine vinegar?

White wine is a certain type of wine that are made from grapes such as pinot grigio, pinot noir, and others like them. It has a slightly more sour taste than red, and is much crisper and more refreshing. My favorite white wine is Vinho Verde from Twin Vines (http://www.jmftwinvines.com/about-twin-vines-wine.html) it's a sparkling white wine from Portugal and definitely something worth looking into.