Onsuban Seonyudojeom is a Korean restaurant in Seonyudo, Seoul, that serves onmyeon with rice noodles and onban with rice. The broth is brewed in-house with meat and medicinal herbs, and cuts such as yangji chadol are added to it. The L-shaped counter seating serves food in brass bowls, and noodles or rice are added on request. The wait is long during lunch hours.