A lot of wine drinkers buy they same — often big-production, commercial — wines because they want to know what they are going to get. They find comfort in knowing the wine buy is going to taste good to them every time they buy it. Cool-climate regions like the Finger Lakes don’t always offer that invariability. Cloudy, cool summers, poorly timed rain and potentially harmful frost are realities. Some years they all happen. Year-to-year consistency is difficult under these conditions… but it’s not impossible. Take¬†Sheldrake Point Vineyards 2012 Gewurztraminer $18) — one of the most consistently delicious wines in the…