This cafeteria-style Union Square spot is a late-night favorite for burgers and booze-spiked milkshakes. Restaurateur Jonathan Morr puts an upscale spin on the humble burger with versions like the Bourbon Street, which comes dressed with Maker’s Mark smoked BBQ, double mozzarella, and sliced jalapeno. For something slightly more gourmet, there's the American Kobe-style Wagyu beef burger. Onion rings, sweet potato fries, and deep-fried pickles are all side options. Toasted marshmallow is a shake flavor favorite, made stiff with a shot of Absolut.