Chon Guksu Jeongsik in Busan is a family-style restaurant serving a set meal of soy-marinated crab. The menu has one option, the soy-marinated crab set, with unlimited rice, side dishes, and kimchi. It opens at 6 a.m., so it works for breakfast. The side dishes and main stew change daily, and staff portion out the kimchi when you go back for more.