Rao Ppiak Singyongsanjeom is a Lao noodle restaurant in Samgakji, Seoul. It serves kao piak with a poached egg, dogani noodles, and spicy stir-fried noodles. Kao piak switches from fresh noodles to dried noodles when the fresh noodles run out, so check before ordering. The stir-fried noodles are thick, absorb less sauce, and become tiring to eat.