Gayang Kalguksu Beoseot Maeuntang is a shabu-shabu-style kalguksu restaurant in the basement of Hongwoo Building in Yeouido, Seoul, serving mushroom maeuntang and kalguksu. Diners blanch minari and mushrooms in the boiling broth, then finish with thick kalguksu noodles and bokkeumbap, with unlimited refills of minari and mushrooms. The restaurant has operated since 1990, and minari, mushrooms, and broth can be refilled at the self-service bar. Wait times occur in the evening and on weekends.