When Long Island Bar, a favorite Cobble Hill diner, shut down in 2007 after 56 years in business, it looked like it was going to be another casualty of an ever-evolving New York. But after a seven-year hiatus, it was reopened by Toby Cecchini, the infamous bartender who invented the Cosmopolitan. The reimagined Atlantic Ave bar keeps the mid-century American diner feel but adds modern touches with its food and drink. The nostalgic menu features modest tweaks on diner favorites, like a reuben sandwich with smoked beet sauerkraut, and a double-patty burger topped with house-made American cheese, super-sour pickles, and the house "Fancy Sauce." The cocktails, executed by Cecchini, are straightforward and top-notch: the Long Island Gimlet (gin, lime-ginger Cordial, fresh lime) and the Boulevardier (like a negroni, but with whiskey instead of gin) are especially notable.