Wangsimni Jogae Changgo Nowon is a self-service barbecue buffet in Nowon, Seoul, where diners eat clams, beef and pork with unlimited refills. The standard approach is to take scallops and pen shells from the tank and grill them at the table. Staff check on the grilling as it goes, and the self-service bar carries items beyond clams and meat. The condition of the clams and meat varies.