I think that Vignoles, a French-American hybrid grape, gets a bum rap. Sure maybe Ravat 51, as it is often called (J.F. Ravat was the creator), probably does its best work in late harvest/dessert-style wines. Take high sugar and natural acidity and add tight clusters that make it susceptible to noble rot and you have a grape well suited to sweet dessert wines that are well balanced and even complex. But Vignoles isn't a one-trick pony. While it's true that Vignoles is never going to have the elegance, delicacy or grace of a well-made riesling, this Keuka Lake Vineyards 2007…