Spicy Seolleongtang with ribs and soondae Ox bone broth soup is a Korean tang (soup) made from ox bones (mostly leg bones). Enjoy delicious Korean food, including rich seolleongtang (simmered for 72 hours) and top-quality beef steak for meat lovers. Served with rice, kimchi, seokbakji, and pickled onions. Depending on your personal preference, you can also choose udon instead of rice.