It’s easy to get complacent when you taste a lot of Finger Lakes riesling — overall quality has risen to the point that even producers that historically fell below the median are now making wines I’m happy to drink. It’s almost to the point that one can take for granted that Finger Lakes riesling is going to deliver. Then you taste a wine like Hermann J. Wiemer 2013 Josef Vineyard Riesling ($39) and you’re reminded just how high the ceiling is for Finger Lakes riesling. The Josef Vineyard, located 10 miles north of the winery, is just south of the better-known Magdalena Vineyard.…