What is Sushi?
Sushi is Japan’s most iconic culinary creation — vinegared rice (shari) paired with fresh seafood or other toppings (neta). Behind its deceptively simple structure lies the accumulated craft of the sushi chef (itamae): the eye to judge fish freshness, the precision to season and temper the rice, and the technique to unite neta and shari in a single, seamless bite.
Sushi takes many forms, from high-end counter seats where a master shapes each piece by hand, to conveyor-belt restaurants where plates orbit past diners, to grab-and-go packs at convenience stores. This versatility across every price point and setting is a key reason sushi has become the world’s most recognized Japanese food. As a cornerstone of “washoku” — Japanese cuisine inscribed on UNESCO’s Intangible Cultural Heritage list — sushi is essential to understanding Japan’s food culture.
History of Sushi
Nara Period: Narezushi — Sushi as Preservation
The ancestor of sushi was “narezushi,” a fermented food dating to the Nara period (710–794). Fish was packed in salt and rice, and lactic acid fermentation preserved the fish for months. The rice was typically discarded, serving only as a fermentation medium. Shiga Prefecture’s “funazushi,” made from Lake Biwa crucian carp, keeps this ancient tradition alive today.
Muromachi to Azuchi-Momoyama: The Shift to Eating the Rice
By the Muromachi period, a faster-fermented style called “namanare” emerged, in which the rice was eaten along with the fish. This conceptual shift — enjoying rice and fish together — was a crucial step toward the sushi we know today.
Edo Period: The Birth of Nigiri-zushi
Modern sushi was born in late-Edo-period Tokyo (then called Edo). “Nigiri-zushi” — fresh fish placed atop a small mound of vinegared rice — was also known as “Edomae-zushi,” using fish caught right in Edo Bay. Sold at street stalls, it was the fast food of its day, perfectly suited to the impatient Edokko (Tokyoites). Without refrigeration, chefs developed preservation techniques such as soy-sauce marinades (nikiri) and vinegar curing (shimeru) that also deepened flavor.
Modern Era: SUSHI Goes Global
Refrigeration technology made raw fish the standard topping. In 1958, the conveyor-belt sushi restaurant was invented in Osaka, democratizing sushi nationwide. From the 1970s, the California Roll sparked sushi’s international spread, and today sushi restaurants can be found in virtually every major city on earth. “SUSHI” has become a global byword for Japanese culinary culture.
Main Types of Sushi
Nigiri-zushi (Hand-Pressed Sushi)
The quintessential form: a small, hand-shaped mound of shari topped with a slice of neta. Tuna, salmon, shrimp, squid, sea bream, uni (sea urchin), and ikura (salmon roe) are among the most popular toppings. At high-end restaurants, “omakase” (chef’s choice) courses present the day’s finest selections in a carefully considered sequence.
Maki-zushi (Rolled Sushi)
Shari and neta wrapped in nori (seaweed). Thin rolls (hosomaki) such as tuna roll (tekka-maki) and cucumber roll (kappa-maki) are bite-sized staples. Thick rolls (futomaki) combine multiple fillings. The internationally popular California Roll is an “inside-out” variation (uramaki) with rice on the outside.
Chirashi-zushi (Scattered Sushi)
An assortment of sashimi, egg, and vegetables scattered artfully over a bowl of shari. Often prepared for celebrations and the Hinamatsuri (Doll Festival), chirashi-zushi is also a beloved home-cooked dish with regional variations across Japan.
Oshi-zushi (Pressed Sushi)
Shari and neta are pressed into a wooden mold to form compact blocks — a traditional Osaka style. Pressed mackerel sushi (saba-zushi) is the best-known variety, widely available as an ekiben (train station lunchbox). The firm texture and concentrated flavor set it apart from nigiri.
Temaki-zushi (Hand Rolls)
A casual, DIY style in which diners hold a sheet of nori, add shari and their choice of neta, and roll it into a cone. “Temaki parties” — where family and friends gather around a table of ingredients to make their own rolls — are a popular home-dining tradition in Japan.
The Sushi Chef’s Craft and Tools
The Art of Shaping
The saying “three years to learn rice, eight years to learn nigiri” reflects the length of a sushi chef’s apprenticeship. The ideal shari temperature (roughly body temperature), the number of rice grains per piece (traditionally around 200–250), and the amount of air trapped between grains — all are calibrated by fingertip sensation alone in a matter of seconds.
The Knife
A sushi chef’s knife is an extension of their identity. The yanagiba (willow-blade knife) is a single-edged Japanese knife designed to slice fish in one long, pulling stroke — preserving cell structure and leaving a mirror-smooth cut surface. Daily sharpening is a fundamental part of the craft.
Shari (Vinegared Rice)
The quality of shari makes or breaks the sushi. Freshly steamed rice is dressed with a blend of vinegar, salt, and sugar, then fanned rapidly to achieve a glossy sheen. The exact vinegar recipe is each restaurant’s closely guarded secret — and it is the shari, with its presence strong enough to stand alongside any neta, that ultimately defines a sushi restaurant’s character.
Where to Enjoy Sushi
High-End Sushi Restaurants
Sitting at the counter and receiving one piece at a time from the chef’s hands in an “omakase” course is the pinnacle of the sushi experience. Conversation with the itamae and the thrill of tasting the day’s best selections make it a deeply personal encounter with Japanese food culture. Prices can reach tens of thousands of yen per person, but it is a once-in-a-lifetime experience well worth seeking out.
Conveyor-Belt Sushi (Kaiten-zushi)
Plates of sushi orbit the restaurant on a conveyor belt, and diners pick whatever catches their eye. With plates starting from around 100 yen, kaiten-zushi makes high-variety sushi accessible to everyone. Modern chains often use touchscreen ordering and high-speed lanes that deliver made-to-order plates directly to your seat.
Sushi-Making Experiences
Hands-on sushi classes aimed at international visitors are increasingly available in Tokyo, Kyoto, and other cities. Participants learn basic nigiri technique from a professional chef and eat their own creations on the spot. English-language classes make this one of the most popular cultural experiences for travelers.
Summary
From the ancient preservation technique of narezushi to the Edo-period street-stall nigiri, and from Osaka’s conveyor belts to Michelin-starred omakase counters, sushi has evolved across more than a thousand years into the world’s most beloved Japanese food. Within the simple pairing of shari and neta lies the full depth of Japanese culinary philosophy: the fishmonger’s eye, the vinegar master’s recipe, the chef’s hands, and the seasonal cycle of ingredients. Whether you splurge on omakase, spin through a kaiten-zushi, or roll your own at a workshop, sushi is Japan’s gift to the world’s table.
