It’s rare that one can go buy a fully mature Long Island wine right off the shelf, but Medolla Vineyards offers that opportunity with the current release Medolla Vineyards 2004 Merlot ($19). Yes. 2004. Current. Release. The Medolla wines are made at Lenz Winery under the watchful eye of Lenz winemaker Eric Fry. The 2002 was one of the most underrated merlots on the North Fork when it was released and the 2007 was a killer value a few years ago when it hit shelves. The 2004 — no doubt given extra time in bottle to even out some of the rustic…