By Evan Dawson, Finger Lakes Editor You've probably never had a Valvin Muscat before (based on the sheer scarcity of the variety), but Villa Bellangelo on Seneca Lake is betting you'll like it. Their Valvin Muscat has become a flagship wine, and we were there when this year's crop came in. Winemaker Darren Bowker estimated the brix to be around 18 with the fruit weighing just over 7 tons per acre. "We'd like a little higher brix and a little lower weight, but this is not a grape that needs to be down at two or three tons," Bowker said.…