So yesterday I took a rare work-week trip into NYC for the Long Island Merlot Alliance’s pre-release party for 2004 Merliance, a 100% merlot wine made from the best lots from the participating wineries. More on the wine and the event later this week. Today we’re focusing on my lunch. I’ve read about Shake Shack a few times, mostly on blogs. But, when Frank Bruni wrote about it reopening for the spring a while back, I decided it was time to make my own visit. Of course, what started off as a beautiful day on eastern Long Island gradually got…