Brooklyn The Burger Joint Cheonggyecheon is a burger restaurant on the Cheonggyecheon stream in Seoul that serves American-style handmade burgers and shakes. The cheeseburger is known for its peppery patty, and french fries and shakes are available on the side. At mealtimes it gets crowded, and customers write their names on a list at the door to wait. Once seated, staff take orders and bring the food out. The American-style flavors and generous portions are decent, but prices run on the high side.