By Lenn Thompson, Editor-in-Chief I'm not 100% certain but I'm pretty sure that this is the first varietal Dornfelder I've ever tasted. And I'm a little embarrassed to say that I knew little-to-nothing about the grape. In fact, all I really knew was that Channing Daughters Winery in the Hamptons grows some and uses it for blending. So what is this grape, Dornfelder? It's a dark-skinned grape that was created in the mid-1950s by August Herold in Germany. It's a cross (not a hybrid) of Helfensteiner and Heroldrebe. It is widely planted in Germany, in part because it grows well in areas that…