Hanseong Sikdang is a Korean restaurant in Seongsu, Seoul, that serves samgyeopsal and naengsam. Naengsam comes in 180g portions, and saengsam can be ordered in the same weight. Aged kimchi and gat kimchi come on the side, and the banchan is a strong point. The restaurant is run by a grandmother and grandfather, so you have to speak loudly and clearly.