100 Fun Facts About Sushi

What is the primary ingredient that is seasoned with vinegar and defines what sushi is?

Sushi is traditionally defined by its vinegared rice, also known as sushi-meshi, shari, or sumeshi. The term 'sushi' itself translates to 'sour-tasting,' referring to this seasoned rice.

Which dried edible seaweed, made from red algae despite its dark green color, wraps most sushi rolls?

Nori is red algae pressed and dried into sheets like paper; a British botanist's 1949 research on its life cycle rescued Japan's nori industry.

Why did the earliest sushi makers ferment fish with salt and rice?

To prevent spoilage without refrigeration: narezushi fish was lacto-fermented for months, and the rice, by then sour mush, was thrown away before eating.

Which Japanese dish of meticulously thin-sliced raw fish is served with no rice at all, so is technically not sushi?

Sashimi is not sushi, since sushi is defined by its vinegared rice; the word covers any thinly sliced raw meat, not just fish.

Which pungent green paste, made from the grated root of a Japanese plant, is the standard hot condiment beside sushi?

Wasabi is grated from the root-like stem of a plant that grows in cold mountain streams, and it is so hard to farm that most of what is served is not the real thing.

Which sushi style, invented in 19th-century Edo, hand-presses a slice of fish onto a small mound of vinegared rice?

Nigiri is credited to Hanaya Yohei in 19th-century Edo, today's Tokyo, where it was sold from street stalls as a quick bite; the name means 'hand-pressed'.

What do you call sushi rolled in nori on a bamboo mat and sliced into six or eight pieces?

Maki means 'roll', and the six or eight slices from one rolled log make up a single order; the bamboo mat is a makisu.

What is the primary job of the rice vinegar dressing folded into freshly cooked short-grain sushi rice?

To add a slightly sweet, salty, and tangy flavor; the stickiness comes from the short-grain rice itself, while the dressing mixes vinegar with sugar and salt, sometimes kombu and sake.

Which of these fish is a widely popular choice for sushi and sashimi, known as 'Maguro' in Japanese?

Tuna, known as Maguro in Japan, is one of the most iconic and popular fish used in sushi and sashimi, cherished for its versatility in flavor and texture across different cuts.

Which cone-shaped sushi, with fillings spilling out the wide end, is meant to be picked up and eaten by hand?

Temaki means 'hand roll', and the cone should be eaten right away, before the nori goes soft from the rice.

Which Edo-period chef is credited with inventing or perfecting nigirizushi around 1824?

Yohei's shop was in Ryōgoku, and his rice portions were about three times the size of a modern nigiri.

What does the Japanese word for this dish literally mean?

The name comes from an old conjugation of the adjective sui, 'to be sour', a nod to the vinegared rice rather than the fish.

In what year did Yoshiaki Shiraishi open the first conveyor belt sushi restaurant, Genroku Zushi?

Shiraishi reportedly got the idea from watching beer bottles move along a brewery conveyor.

Kappamaki takes its name from the kappa, a legendary Japanese water imp said to be fond of which filling?

Cucumber is the kappa's favorite, so the slim cucumber roll bears its name; it is traditionally eaten between pieces of raw fish to clear the palate.

Tekkamaki, the tuna roll, originally got its name from being a quick snack eaten where?

The word tekka means 'red hot iron', and the dens were called tekkaba, an origin story much like the sandwich's.

Inarizushi is sushi rice stuffed inside a pouch made of what?

Fried tofu pouches, aburaage, are simmered sweet and then stuffed; the dish is named for Inari, the Shinto deity of rice.

In Shinto lore, which animals, the messengers of the god Inari, are fond of the fried tofu used in inarizushi?

Foxes guard Inari shrines as stone statues, and some regions fold the tofu pouches with pointed corners to mimic fox ears.

Gunkanmaki, the "warship roll" for loose toppings like roe, was invented in 1941 at which Ginza restaurant?

Wrapping a strip of nori around the rice greatly expanded the range of soft toppings sushi could carry.

Battera, the pressed mackerel sushi of Osaka, takes its name from a Portuguese word meaning what?

The wooden molds used to press the sushi were thought to look like tiny boats.

Oshizushi, block-shaped sushi pressed in a wooden mold, is a specialty of which city?

Every ingredient in oshizushi is cooked or cured; raw fish is never used.

Kakinohazushi, a specialty of Nara, is wrapped in the leaves of which tree?

The leaves add fragrance and help preserve the fish, a practical touch for a landlocked region.

Aburi oshizushi, pressed sushi seared with a butane torch, was invented in 2008 in which city?

The style often layers on mayonnaise, jalapeños and avocado, and later spread to Toronto.

The original California roll used real cooked crab, but modern versions almost always substitute what?

Imitation crab, the kani kama crab stick, is surimi: a paste of processed white fish, usually pollock, dyed and flavored to pass as crab.

Chef Hidekazu Tojo says the California roll got its name from two ingredients abbreviated to "C.A." Which two?

Tojo also claims credit for the inside-out roll and was named a goodwill ambassador for Japanese cuisine in 2016.

Salmon sushi was not widely accepted in Japan until a late-1980s push by which country's salmon industry?

Wild Japanese salmon carries parasites and was always cooked; farmed Atlantic salmon was parasite-free and fatty.

Which ingredient, unheard of in Japanese sushi, is the most common sushi ingredient in Brazil?

Brazilian temaki are often stuffed with large amounts of it too.

Temarizushi is sushi pressed by hand into what shape?

A ball, shaped by hand inside plastic wrap; the name comes from the temari, a traditional embroidered handball.

Ehōmaki, the uncut Setsubun roll, is made with how many lucky ingredients?

The Kansai custom had spread across all of Japan by 2000, helped along by convenience-store promotions.

In sushi-bar slang, 'murasaki' (meaning purple) refers to what?

Most of these slang terms are used only inside sushi bars, not in everyday Japanese.

What does 'agari' mean in sushi vocabulary?

Better sushi restaurants often pour a premium powdered tea called mecha.

In sushi slang, 'gyoku' ('jewel') refers to which topping?

The layered omelette is tamagoyaki in standard Japanese, and chefs are often judged on how well they make it.

Ōtoro, the fattiest and most prized cut, most often comes from which species of tuna?

Chūtoro sits halfway in fattiness between ōtoro and the lean regular cut.

The dark green nori sheets used to wrap rolls are actually a type of what?

Pyropia tenera is the most commonly farmed species, and it turns green only when toasted.

The traditional grater used for fresh wasabi is made from what?

The fine, rough surface produces a smooth paste and releases the pungent compound allyl isothiocyanate.

The imitation wasabi served in most restaurants outside Japan is mostly a dyed paste of which root?

Horseradish plus mustard powder and green dye is the recipe for seiyo-wasabi, which in Japan may be labelled 'Japanese Horseradish'.

Roughly what share of applicants pass Japan's licensing exam to prepare fugu pufferfish?

The test includes written, fish-identification and practical sections, the last requiring the toxic organs to be removed.

EU rules require fish served raw to have been frozen for at least 24 hours below what temperature?

Suppliers often go much further, flash-freezing tuna to −60 °C, which also stops the flesh discolouring.

Fixed-price sushi sets are often graded shō-chiku-bai. Which plant marks the most expensive tier?

Plum (ume) is the cheapest tier, which sidesteps having to print 'small, medium, large' on the menu.

Nyotaimori is a controversial Japanese presentation style that serves sushi on what?

A woman's naked body serves as the platter; the name translates roughly as 'female body presentation'.

Conveyor belt sushi became known throughout Japan after Genroku Sushi won an award at which event?

Once the patent expired, rival chains spread the format nationwide and pushed prices down.

Nakano Matazaemon, developer of Edo-era red sushi vinegar, founded which vinegar company?

Aka-su was fermented from sake lees, and Edo chefs used about half as much vinegar as modern sushi does.

Chirashizushi, rice topped with scattered fish and vegetables, is traditionally eaten on which March festival?

It is also served on Children's Day in May, prized for being filling, fast and easy.

Funa-zushi, the most famous surviving form of fermented narezushi, is a specialty of which prefecture?

The authentic version uses nigorobuna, a wild goldfish variety found only in Lake Biwa.

Which inside-out roll, born of the California roll's trick of hiding seaweed from Western diners, puts rice outside the nori?

Uramaki means 'inside-out roll'; it remains uncommon in Japan, where the nori stays on the outside.

Korean gimbap looks like makizushi, but its rice is seasoned with what instead of vinegar?

Sesame oil and salt season gimbap rice, and fillings such as danmuji pickled radish and bulgogi are wrapped in gim, the Korean equivalent of nori.

Unlike the burn of chilli peppers, the heat of wasabi is felt mainly where?

In the nose, because wasabi is a cousin of hot mustard and horseradish, and freshly grated wasabi loses that punch within minutes if left uncovered.

The earliest form of sushi, narezushi, likely developed in the basin of which river?

It began in Southeast Asia as a way of preserving freshwater fish and was first documented in China around the 4th century.

The first sushi shop in the United States reportedly opened in 1906 in which neighbourhood?

Japanese food had a brief vogue around 1905 at themed parties as far afield as Minneapolis; the first true sushi bar, Kawafuku, came decades later.

Researchers won a 2011 Ig Nobel Prize for using wasabi vapour in what kind of device?

They worked out the ideal density of airborne wasabi to wake sleepers in an emergency; sniffing it acts like smelling salts.

Namanare, the Muromachi-period sushi that was the first eaten rice and all, has a name meaning what?

Its shorter fermentation turned sushi from a preserved-fish method into a dish of fish and rice eaten together; vinegar only arrived in the Edo period.

Edo-period nigiri used a rice mound roughly how large compared with today's?

Edo nigiri was a substantial snack, and it used half as much vinegar and slightly more salt than the modern version.

The 'Edomae' in Edomae zushi originally referred to fish caught where?

Today 'Edomae nigirizushi' is used as a byword for quality sushi regardless of where the fish actually came from.

In the Kansai region, inarizushi pouches are usually made in what shape?

Kantō prefers a rectangular pouch. Some regions give the pouch pointed corners to suggest the ears of Inari's fox messengers.

Tsunamayomaki is a thin roll filled with canned tuna tossed with what?

Japanese-style mayonnaise is a common sushi condiment in Japan, turning up on seafood and even pork toppings.

In negitoromaki, the 'negi' is which ingredient?

The 'toro' half is chopped fatty tuna, which is why the roll tends to be richer than a plain tuna hosomaki.

How long does modern narezushi spend in its barrel before it can be eaten?

Once ready, it stays edible for another six months or more, which is the whole point of a preservation method that predates refrigeration.

Authentic funa-zushi uses nigorobuna, a wild goldfish variety found only in which waters?

Lactic fermentation softens the bones so the fish can be eaten whole, and the roe is often said to smell rather like cheese.

Australian-style takeaway sushi rolls first appeared in 1995 at a stall in which city?

Owner Toshihiro Shindo's Sushi-Jin stall adapted rolls to local tastes; the uncut, teriyaki-chicken-filled hand roll became a national snack.

Sushi pizza, a fried rice patty with fish and mayo on top, comes from which Canadian city?

It was conceived by chef Kaoru Ohsada by 1993 and is now counted among the city's signature dishes alongside the peameal bacon sandwich.

Compared with Kantō, the sushi-rice dressing of the Kansai region uses more of what?

Kantō chefs lean saltier. Most regional variation in sushi rice is in this vinegar dressing rather than the rice itself.

A makisu rolling mat is woven from bamboo and what?

Some cooks wrap the mat in plastic film, which is almost essential when making inside-out rolls.

Sheet-form nori was invented in Edo-era Asakusa by borrowing the method of which craft?

Before about 1750, nori was eaten as a paste. The finished sheets are still made by a shredding and rack-drying process.

Japan's postwar nori industry was rescued by a seaweed scientist from which country?

Kathleen Drew-Baker's work on laver in Wales revealed the seaweed's three-stage life cycle, which Japanese growers had not understood.

Green plastic dividers between sushi pieces imitate the cut leaves of which plant?

Real cut leaves released antimicrobial phytoncides that helped the sushi keep; plastic took over as refrigeration spread in the 1960s.

In sushi-bar slang, asking for 'oaiso' gets you what?

The word literally means 'compliment', and it is heard in izakaya as well as sushi bars.

Traditional etiquette says nigiri should meet the soy sauce which way?

The seasoned rice would otherwise soak up too much sauce and fall apart.

Even in formal settings, nigirizushi is traditionally eaten how?

Sashimi, by contrast, is almost always eaten with chopsticks.

Fish for sushi may be flash-frozen on boats to as low as what temperature?

Super-freezing kills parasites and also stops the blood in tuna oxidising, which would otherwise discolour the flesh.

The lethal poison concentrated in fugu pufferfish organs is what?

Fugu-hiki knives used to slice the fish are stored apart from other blades because of the liver's toxicity.

Anisakis, a parasite risk in raw fish, is what kind of organism?

Japan reports more than 1,000 cases of anisakiasis a year; the first case was described in the Netherlands in the 1960s.

Which US president ate at Sukiyabashi Jiro with Shinzō Abe in April 2014?

Reports conflict on whether he finished the meal, though Abe said Obama called it the best sushi he had ever had.

Why was Sukiyabashi Jiro dropped from the Michelin Guide in 2019?

Reservations must go through a luxury-hotel concierge, so Michelin stopped listing it even though the food had not changed.

The score of Jiro Dreams of Sushi leans heavily on which composer's music?

Director David Gelb said the repetitive, escalating music was a metaphor for Jiro's daily pursuit of small improvements.

Sukiyabashi Jiro, the famed ten-seat sushi bar, sits inside what kind of building?

The counter serves a tasting menu of roughly 20 courses, with a minimum spend around ¥88,000.

Kiyoshi Kimura, the 'Tuna King' who paid ¥333.6m for one fish in 2019, runs which chain?

He topped the New Year tuna auction again in 2026 with a bid of about ¥510 million, a new record.

Toyosu Market, which took over Tokyo's fish auctions from Tsukiji, opened in which year?

The move was delayed two years after toxic substances from a former gas plant were found in the soil and groundwater.

Under 2024 plans, the old Tsukiji market site is to get a stadium for which baseball team?

A Mitsui Fudosan-led consortium won the 2024 redevelopment bid with a multi-purpose stadium; the outer market of shops and sushi restaurants remains a major tourist draw.

In 2021, Taiwanese diners legally renamed themselves after which fish for free Sushiro food?

The 'salmon chaos' saw the record for Taiwan's longest legal name broken repeatedly, and one student feared he was stuck with his new name.

Yoshiaki Shiraishi got the idea for conveyor-belt sushi from bottles moving where?

Short-staffed at his small restaurant, he spent five years developing the belt and its speed before opening in 1958.

The word omakase, used for chef's-choice dining, means what?

A typical omakase runs 10 to 20 courses, starting light and building toward richer dishes.

Yuki Chizui's all-female-staffed sushi restaurant opened in 2010 in which Tokyo district?

The itamae profession was traditionally reserved for men; Chizui remains one of the few well-known female sushi chefs.

Traditionally made gari turns slightly pink only when the ginger is what?

Many commercial brands add beet juice, red shiso or dye E124 to fake the blush.

The Japanese word ikura, for the orange roe on gunkan sushi, was borrowed from which language?

It comes from ikra, the Russian word for caviar or fish roe in general.

Black tobiko gets its colour from which natural ingredient?

Yuzu turns it pale orange and wasabi makes it green and spicy, so one serving can carry several colours.

Unagi is traditionally eaten on which hot-summer day in Japan?

Lake Hamana in Hamamatsu is regarded as home of the finest unagi and is ringed with specialist eel restaurants.

Anago, the saltwater eel, is usually prepared how for sushi?

Freshwater unagi is usually barbecued with tare sauce; anago is softer, sweeter and a little less oily.

Connoisseurs traditionally ordered which sushi first to judge a chef's skill?

Back when most sushi shops made their own tamagoyaki, the layered omelette showed a chef's technique before any fish was served.

Hamachi is often listed as 'yellowtail tuna' but is really what kind of fish?

It belongs to the jack family Carangidae, not the tuna family, and adults over about 5 kg are sold as buri.

Uni, the sea urchin served on gunkan sushi, is which part of the animal?

They are the only meaty, edible part and can retail in Japan for as much as ¥40,000 per kilogram.

Most imitation crab used in sushi rolls is made from which fish?

The Japanese name kanikama blends kani (crab) with kamaboko (fish cake); Sugiyo patented the product in 1974.

In the Pacific Northwest, the Philadelphia roll often goes by what name?

Its smoked fish, cream cheese and cucumber go inside-out, a design aimed squarely at American diners.

A spider roll is named for the legs of which ingredient poking out of its ends?

The name is mostly a North American usage and is rare elsewhere.

The rainbow roll is also known by what other name?

It takes the California roll one step further by draping raw tuna and white fish over the top.

Which actor co-founded the first Nobu restaurant in Tribeca in 1994?

Nobu Matsuhisa had fed him at Matsuhisa in Los Angeles, and he returned the favour with a cameo for the chef in Casino.

Spam musubi, grilled Spam on rice wrapped in nori, is a signature snack of where?

L&L Hawaiian Barbecue declared August 8 National Spam Musubi Day in 2021, and the governor issued a proclamation.

The yanagi-ba sashimi knife is named after which tree?

The Osaka-style blade has a pointed tip; Tokyo's tako-hiki is shorter and square-tipped for octopus and squid.

The Daio farm, the world's largest commercial wasabi farm, is in which prefecture?

Its watermills appear in the closing chapter of Akira Kurosawa's 1990 film Dreams.

Wasabi belongs to the same plant family as which vegetable?

Its heat comes from allyl isothiocyanate, the same compound that gives mustard its kick.

Where does a sushi chef traditionally tuck the wasabi in a piece of nigiri?

Covering it preserves the flavour, which fades fast when fresh wasabi is left exposed.

Roughly what share of the world's Pacific and Atlantic bluefin tuna is eaten in Japan?

Publicity-seeking bids at the New Year auction push prices far above the fish's usual market value.