Sarosu Gamjatang in Seoul serves bone hangover soup, sundae guk, and Hamhung naengmyeon. The main dish is bone hangover soup made with pork bones, and there is also a version with sujebi (hand-torn dough soup) added. The Hamhung naengmyeon noodles are pressed in-house and come with one dumpling. Side dishes can be refilled from a self-service bar, and the restaurant is open 24 hours.