Memorial Day weekend was a big weekend for the folks at Grand Cru Classes, the only wine education organization in Long Island wine country.  You see, not only have the renovated their barn and converted it into a classroom, but last weekend they finished planting their educational vineyard. The basics of the as-yet-unnamed vineyard are: Rows: 9 rows spaced 5-1/2 feet apart Vines: 11 per row spaced 4-1/2 feet apart Varietals: Chardonnay, Cabernet Franc and Merlot Varietal Count: 3 rows (or 33 vines) each Total Vines: 99 Fruit Yield: Roughly 2-gallons per row or a 6-gallon batch per varietal **…