MOS Burger first used rice as a burger bun in 1987.
The Japanese fast-food chain introduced the rice burger as an alternative to the conventional wheat bun. Instead of bread, the sandwich uses compacted rice patties that hold the filling together. MOS Burger’s innovation connected the familiar hamburger format with a staple ingredient in Japanese cuisine.
The idea was more than a novelty. Rice burgers could carry fillings associated with Japanese tastes, including grilled meats, seafood, and sauces, while retaining the portable structure of a hamburger. The format later spread beyond Japan, particularly in East Asian markets where rice is a major part of everyday cuisine.
A frequent confusion is the year 2005, because McDonald’s began offering rice-bun products in some Asian markets around that time. That was a later adoption by another chain, not MOS Burger’s original introduction. MOS Burger’s 1987 launch is the date associated with the commercial rice burger’s origin.