=== Japan is a home for many kinds of sushi, but in foreign countries, Sushi no longer exist, and even if it does, not at its original form. It is important to say that the origin of sushi is not Japan. Original “sushi” comes from 7th century China. People began making sushi to preserve fish by fermentation since there where no refrigerators. Since rice and salt where one of the key ingredients in fish fermentation, sushi became closely related to Japan. And there, it evolved into the current sushi, which combine fish and rice.=== Original method of sushi preparation included following steps: