Hambagdong Sumibi is a Japanese restaurant in Seoul that serves hambagdong, hamburger steak placed over rice. Its main dish, hambagdong onsen tamago don, comes with two hamburger steaks and a hot spring egg on rice, eaten according to the instructions at the table. Orders are placed at a kiosk, and the two steaks grilled at the central hearth arrive at different times so they stay warm. The space is small, and there is an additional wait after entering.