At first, sushi was just salted fish. Later, salted fish was served with rice, and fish and rice were eaten together. This is the predecessor of sushi cuisine today. Although sushi first came from China, it has become one of the representatives of Japanese culture after more than 1000 years of development.
Development history
The earliest sushi is a small food made of rice, raw fish and sauce, which can be eaten in one bite. There are many kinds of sushi now, which can hold many things, but you must eat it all at once. Japanese sushi was recorded in heian period Code "Yan Xi Style" in 927 AD.
Sushi was a way to preserve fish at that time. Rub the salt on the fish, press it with a heavy object and let it ferment naturally. You can eat it when it is sour. It tastes good. It is said that this way spread from China to Japan. This method is time-consuming and laborious, and soon developed into a simple way of soaking fish in vinegar.
Sushi refers to any food with other fillings added to vinegar bibimbap. Nowadays, Japanese sushi includes not only hand-held sushi (that is, sushi we often eat now), but also rolled sushi and box sushi.
Refer to the above content: Baidu Encyclopedia-Sushi