However, the standard serving dimension is generally smaller -- usually 2 to 3 ounces -- so figure about 100 to 150 calories every glass. In fact, and I hate to admit it, I have become a piece of a wine snob. https://www.openlearning.com/u/scotthuynh-sdl8fx/blog/RuHennessyTinhHoaCaThmMTrnTrnVintagewine