Sushi originated in China. Later introduced to Japan. Sushi has been popular in China more than 1,800 years ago (that is, the Later Han Dynasty). By 700 AD, sushi began to be introduced to Japan. At that time, some business travelers used vinegar to pickle rice balls, add seafood or meat, and press them into small pieces as food along the way. Later, it was widely spread in Japan. The ingredients at that time were even used in various kinds of meat, and they were called " "Edo Sansushi", also known as "Nigiri Sushi", is the most popular sushi today. Among modern Japanese sushi, in addition to "nigiri sushi", there are also two types of "roll sushi" and "box sushi". "Sushi maki" is made of cucumber, tuna, eggs, pickled radish and other ingredients wrapped in seaweed. "Juan Sushi" is divided into Taijuan and Xiaojuan. As the name suggests, they are divided into big and small. "Hako Sushi" first puts the rice into a wooden box, spreads various ingredients on it, seals it and presses it tightly, then takes the sushi out of the wooden box and cuts it into pieces, which looks like a box, hence the name. "Handroll" is actually a type of "maki". It is said that in the 18th century, those Japanese gamblers lingered in the casino (Tekkaba) all day long. When they were gambling and were afraid of starving to death, they would eat tuna (tuna) meat. Add it to rice and roll it up with seaweed. You can eat big mouthfuls without the rice grains sticking to the cards and fingers, killing two birds with one stone, so it is very popular among gamblers. This kind of food originated from casinos, so it was called tekkamabi, and gradually evolved into today's hand rolls. The earliest sushi was a small food made of rice, raw fish and sauce that could be eaten in one bite. Nowadays, there are many kinds of sushi, which can put a lot of things on it, but it must be eaten in one bite. Japanese Sushi Sushi has been recorded in the "Enki Style" of the Heian period code completed in 927 AD. Sushi at that time referred to a way of preserving fish. Spread salt on the fish and press it with something heavy to allow it to ferment naturally. When the sour taste is produced, it can be eaten and its taste is very good. It is said that this method was introduced to Japan from China. This method was time-consuming and labor-intensive, and soon developed into a method of simply soaking fish meat in vinegar. Nowadays, the so-called sushi refers to any food that is made of rice mixed with vinegar and added with other fillings. Today's Japanese sushi, in addition to "nigiri sushi" (the sushi we often eat now), there are also "roll sushi" and "box sushi". "Maki Nushi" is rice, cucumber, tuna, eggs, pickled radish, etc. wrapped in seaweed. It can be divided into large and thin rolls, that is, different sizes. A sushi roll usually uses 90 grams of rice, and is cooked into about 200 grams of rice. It is then wrapped in seaweed and eaten. Sometimes thin scrambled egg skin can be used instead of seaweed. A sushi roll wrapped with a whole sheet of seaweed is called a "big roll" (i.e. a thick roll), and a sushi roll wrapped with only half a sheet of seaweed is called a "thin roll". Sushi rolls are usually stuffed with cooked sweet ham, mushrooms, scrambled egg skin, fish floss or duck celery. Hand rolls are actually a type of "maki sushi". It is said that when Japanese gamblers in ancient times were hungry, they would put tuna in their rice and then roll it up with seaweed to prevent the rice from getting on their poker cards and fingers. welcome.