what is called sushi in modern times was created by hanaya yohei (1799–1858) at the end of the edo period. sushi invented by hanaya was an early form of fast food that was not fermented. it was prepared quickly. it could be eaten with one's hands. this fish was originally known as edomae zushi because it used freshly caught fish in edo-bay or tokyo bay. the fish used in modern sushi no longer usually comes from tokyo bay.