Wongol Jeontong Sundaeguk is a Korean restaurant in Jangan-dong, Seoul, that serves sundaeguk, a soup made with sundae and organ meat. The clear, rich broth holds a generous amount of sundae and organ meat, and diners season it with saeujeot, dadegi, perilla seed powder, pepper, and cheongyang chili. The building is newly constructed, so the interior is clean, and there is a large parking lot. Prices are on the higher side.