Around the 18th century, zushi or sushi reappeared. This time, however, it is the sea fish that is preserved in this way. The society of Japan has changed. More and more people can now afford the expensive sea fish. But it does not last long. So the millennia-old technique for preserving fish is adopted from the Chinese and adapted to saltwater fish and nori (seafood).
The fish is fermented in this way for a shorter and shorter time. With the rice vinegar, it goes faster and the taste should improve with it. Over time, the fish is then no longer preserved, but simply processed raw – for immediate consumption. Only the rice is now soured.
This is how the first sushi stands in old Tokyo are born, some of which still exist today.