Ungkal Seongsu is a kalguksu restaurant in Seongsu, Seoul, that serves knife-cut noodles topped with chicken thigh meat. Its signature Ungkal dish comes with clear meat broth, knife-cut noodles, and soft chicken thigh meat, while Yeolkkal is a spicy dish in the jang kalguksu style. The broth warms the body on cold days. The interior of the restaurant is clean.