Calexico
Named for a border town between Mexico and California, this casual, easygoing Cal-Mex restaurant originated as a street cart in SoHo before opening a number of storefronts, three of which are in Brooklyn. At the Upper East Side outpost, you'll find Calexico's usual staples of burritos, quesadillas, tacos, and enchiladas. Items to try include frozen margaritas, chipotle-marinated pork tacos, and esquites, a grilled corn salad mixed with cotija (aged cow's milk) cheese, lime mayo, chili powder, sour cream, and cilantro. There's also a kids' menu, weekday happy hour and a weekend brunch.