By Finger Lakes Correspondent Jason Feulner This past spring, the comments of some LENNDEVOURS readers concerning the origin of grapes for Dr. Frank’s second label, Salmon Run, elicited a response from Fred Frank, president of the winery. His explanation as to the origin of these grapes for the value-priced Salmon Run line reveals the market pressures that are brought to bear on Finger Lakes wineries. Bad winters can kill some species of vines, creating legitimate regional shortages. Dr. Frank’s and other quality wineries did face some supply problems over the last several vintages. Luckily, the relative mildness of recent winters…