Those seeking authentic, 24/7 Korean carousing need go no farther than Gahm Mi Oak, a 32nd Street standby that attracts young Asians and intrepid Westerners. It specializes in delicacies that pair well with beer and soju. Begin your bout with Sul Long Tang, a luxurious, cloud-white broth of ox bones boiled for 12 hours and topped with ribbons of beef brisket, rice, and rice noodles. (Folklore says it prevents hangovers.) Scallions, sea salt and pepper give it some zip.