Cheongjinok is a haejang-guk restaurant near Gwanghwamun and Jonggak in Seoul that serves a soup containing yang and seonji. The yang-seonji haejang-guk comes with generous portions of yang and seonji, and the broth is clear and refreshing. This old haejang-guk restaurant serves kkakdugi alongside the soup. The offal can be tough.