Byeongcheon Sundae Guk is an old restaurant in an alley of the residential area in Bangi-dong, Songpa-gu, Seoul, serving sundae guk made with a mix of Byeongcheon sundae and meat. It offers two kinds: regular sundae guk and spicy sundae guk, and gives diced peppers on the side to add to the broth and change the flavor. At lunch, solo diners are seated after 12:30 PM, and on cloudy days the small floor-seating restaurant fills up enough that people wait. Most seats are floor seating, and the restroom is not clean.