Eunseong Sundaeguk 은성순대국

Long-simmered beef bone broth keeps this sundae-guk (blood sausage soup) clean and mild rather than punchy. Sundae bokkeum, the sausage stir-fried with lots of scallions, turns lunch into a drinking session. Pictures and memorabilia of Lenin and Che Guevara hang on the walls, an unusual sight in a soup shop.