Stubborn is a basement American steak bistro near Yeoksam Station in Gangnam, Seoul, serving dry-aged T-bone steak, truffle cream pasta, and french fries. A dry-aging locker stands at the entrance, and the partially open kitchen is visible from the seating area. At lunch, a set menu combines salad, whole pork belly steak, and truffle cream pasta. The wide table in the center suits small group gatherings, and menu prices run high.