Gyeokgoksanjang is a mountainside restaurant in Busan that serves duck gui, duck baeksuk, and dakdoritang. The duck tang and ot dak come as soup dishes, and vegetables such as lettuce and seasonal side dishes are made with ingredients grown on site. The first floor has quiet rooms and a large hall, and reservations are required before visiting. There is no dedicated parking lot, so cars must be parked near the house.