By Lenn Thompson, Executive Editor "It's too bad that Long Island cabernet is never any good — and can't age." I don't make a habit of quoting myself in blog posts, but this extremely sarcastic comment got quite a few laughs at a recent tasting of older Long Island wines. Just about every wine we tasted elicited metaphorical, if not actual, giggles actually — the giggles of people in on the secret. The secret? Long Island wines can not only survive a decade or two in your cellar, they can thrive. I consider myself lucky to be in on that…