Kongppyeo Sukppyeo Gamjatang Hoehyeon Station Branch serves gamjatang and bone hangover soup made with kongbiji, the ground soybean pulp that thickens the broth and softens the heat. It sits between Hoehyeon Station and Namdaemun Market, and single-portion versions of the dishes are on the menu. The restaurant is open 24 hours and is reached by stairs to the second floor. Lunchtime fills the seats, so an early morning visit works better.