Izakaya Goko is a bar in Yeoksam-dong, Gangnam-gu, Seoul, on the second floor of Banseok Building, near Sinnonhyeon Station. It serves aged sashimi, charcoal-grilled yakitori, and nabe. The daegwangeo siosamhap is flounder wrapped with salt rice and aged kimchi, dipped in salt. Customers crowd in on weekdays, and in the evening the seats fill up and a wait forms, so sitting down right away is difficult.