Brown rice sushi, as the name suggests, is a combination of brown rice and sushi. Brown rice sushi is extremely simple to prepare and all that needs to be done is to mix sushi and brown rice. It can be made in a relatively short duration of time and is hence ideal for emergencies. Brown rice sushi originated in Japan and has come a long way from its humble beginnings and has become popular in almost all corners of the world. It is served cold and can be served as a main course or even as a snack in between meals irrespective of the time of the day.