Overview: Sushi is one of Japan's most renowned foods. Today, it is known the world over. The chef creates a bite-sized mouthful of sushi from fresh fish and vinegared rice. However, this is more properly called edo-mae-zushi, and it is just one of many sushi types. The Japanese diet has long been rich in fish. Sushi was originally made by naturally fermenting raw fish so it would keep for the long-term. Sushi then developed into various different regional styles as vegetables and other local produce were added to the dish. Japanese people often find eating sushi lifts their spirits. We're going to take a closer look at this delicious, versatile food.