The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. On this episode, we discover conveyor belt sushi, an invention that's trundled its way to countries and regions around the world. The technology, in which plates of sushi are delivered via a rotating conveyor belt, actually traces its origins to a single eureka moment in a beer factory in 1950's Japan. This time, the inside story of the one man who brought this Top Invention to life.

The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, electric rice cookers, which create fluffy, great-tasting rice with the press of a button. Developed in Japan in 1955, these automated rice cookers keep growing in popularity: in 2016, exports hit a record high. In Asia and around the world, this invention plays an essential role in creating rice-based dishes. This time, the unknown story behind the birth of the electric rice cooker.