The history of sushi is a story of preservation and culinary evolution that began not in Japan, but in the rice paddies of Southeast Asia around 500 B.C. . The earliest form of sushi, now known as narezushi, was developed along the Mekong River as a method to preserve freshwater fish . Fish was packed in salted, fermenting rice, which produced lactic acid that prevented the fish from spoiling. For months, the rice would ferment and break down, and when the fish was ready to be consumed, the rice was discarded and only the preserved fish was eaten. This technique spread through China before arriving in Japan around the 8th century, where it was documented as a taxable item in the Yōrō Code of 718 A.D.

A significant shift occurred in Japan during the Muromachi period (1336–1573), when people began to eat the slightly fermented rice along with the fish, creating a dish known as namanarezushi . This new style reduced the preservation time and combined the flavors of the fish and rice into a single dish. By the early 1600s, the long fermentation process was further shortened with a revolutionary innovation: the addition of rice vinegar. This allowed the dish to be prepared in a matter of hours rather than months, giving rise to haya-zushi, or “quick sushi” . This version was much closer to modern sushi, as it emphasized fresh ingredients and faster preparation.

The invention of modern sushi is credited to Hanaya Yohei in the 1820s during Japan’s Edo period (1603–1867) . Working from a street food stall in Edo (modern-day Tokyo), Yohei created nigiri-zushi by placing a slice of fresh, lightly marinated fish from the nearby Tokyo Bay on top of a hand-pressed, oblong mound of vinegared rice . This style became known as Edomae zushi, meaning “in front of Edo,” and was an instant success as a convenient and delicious form of fast food for the city’s residents. At the same time, the invention of sheet-form nori (seaweed) in the mid-1700s led to the creation of rolled sushi, or makizushi .

Sushi remained a primarily Japanese dish until the late 20th century. After World War II, it became more widely accessible across Japan, moving from an expensive delicacy to a common meal enjoyed in restaurants and at home . Its global spread began in earnest in the 1970s and 1980s, driven by an increased interest in Japanese culture and cuisine, as well as a growing global appreciation for healthy eating. The invention of the California roll in Los Angeles, which cleverly hid the seaweed on the inside and used familiar ingredients like avocado, was a major catalyst in adapting sushi for Western palates. Today, sushi is a global phenomenon, with countless variations found in cities all over the world, from traditional sushi bars to supermarket shelves