Jongno Noodle Teacher is a kalguksu restaurant on a main street near Jongno 3-ga Station in Seoul. It serves spicy kalguksu, sundubu jang kalguksu, and milmyeon and bibim milmyeon, with free gonggi bap. There are many single-seat spots, and the broth is made with care for a deep flavor. The gamja jeon and buchu jeon come out crispy.