It was invented in 1949 at the Lincoln Grill in Hilo, when the owners threw together rice, a hamburger patty, and gravy because local teens wanted something quick and cheap that wasn't a sandwich.
A mound of white rice is topped with a hamburger patty, a fried egg, and brown gravy, all eaten together with a fork straight from a plate-lunch container. It's a fixture of Hawaii's plate-lunch truck culture.
Philly Cheesesteak