A mix of hospital workers, students, the well-to-do and remnants of the area's immigrant past, Yorkville is far more diverse than the howling hoots and hollers of its local meatheads would imply. There are Irish pubs, British pubs, German beer bars, hookah bars and Hungarian pastry shops-cum-restaurants. Despite all this, the Upper East Side is still fancy-pants burger territory—at least until a certain hour. After other restaurants have donned their wagyu nightcaps and snuffed their truffled candles, the funkier burgers around town let their hair down. More