Hadongkwan is a 70-year-old restaurant in Myeong-dong, Jongno-gu. This restaurant first opened in the 1930s, and serves only two items: Gomtang and Suyuk. And there are only two side dishes: kkakdugi (radish kimchi) and kimchi. Unlike other restaurants, Hadongkwan serves its soup in a brass pot. The broth of the soup seems thin but the taste is delicious and thick. The soup is made of 100% natural ingredients and free of artificial additives.