Sushi 

  Sushi is a famous food in Japan. In a Japanese sushi bar, there are a long train of plates. They pass before the eyes of customers. Sushi is a great food. It is elegant, colorful and delicious. It is popular in Japan and other places in the world. It combine various seafood, such as laver, shrimps and some fishes. But you may want to know how this delicious food is made.
  Rice and fish are main food in Asia. Japanese spent several hundred years to turn them into Japan's national cuisine. Before we had refrigerators and sushi bars, Japanese cooked rice at first. Then they wrapped fresh fish in rice and pressed them with rock. This can ferment them. This process can preserve the fish, but the rice became inedible.
  Then they began wrapping their fish in vinegar-soaked rice. It can improve the flavor and reduce the time for fermentation. Best of all, we can eat the fish with rice: Sushi was born.