By Dave Seel, Long Island Food Correspondent Saturday night was a cool one. Fall was definitely in the air for the 2011 HARVEST East End Fall Tasting. White tents gleamed against a slightly overcast sky on the fields next to Mecox Bay Dairy. The event, presented by Food & Wine and organized by the Long Island Merlot Alliance and the Long Island Wine Council, raised over $30,000 for East End Hospice, Group For The East End, and The Peconic Land Trust. It also offered those attending to taste some of the wine and food from the region's growing wineries and…