Gwangcheonok is a Korean restaurant in Yongsan that serves North Korean-style clear sundae-guk. Its gukbap mixes meat and offal, and doraechang bokkeum and doraechang gopchang jeongol are also served as drinking snacks. The gukbap is assembled by pouring broth over the ingredients repeatedly, so it is ready to eat right away. The building is narrow and tall, and the tables are packed close together.