Buyeonggak is an old Chinese restaurant in Yonggang-dong, Seoul, serving jjajang, jjamppong, and tangsuyuk. Its signature dish, buchu bogeo sal, pairs fried pufferfish with chives and is eaten with mustard sauce or salt and pepper. The restaurant has private rooms and a large space, making it suitable for family or group meals. The fried pufferfish is only mildly crispy.