Why is sushi eaten with soy sauce?

Edo style sushi was created during the Edo period in Japan (1804-1830). The expansion of the soy sauce culture of the Edo area (currently Tokyo) had a big influence on the creation of Edo style sushi. In a time when refrigeration and other technology had not yet been developed, soy sauce played an important role not only in taste, but also in preservation. A surprising number of tasks in the Edo style utilize the scientific effects of soy sauce.

First of all, by lightly boiling down the topping, bringing out its flavor and creating a glaze. To put it scientifically, this a clever use of the odor eliminating effects of soy sauce, eliminating the raw odor.


Also, long ago zuke (soaking in soy sauce) was also used for fish other than tuna. This was a way to utilize the bacteriostatic effects of soy sauce, which stop the growth of Escherichia coli (E. coli).


Boiling down (tsume) represents the thermal effects of soy sauce. By adding soy sauce, mirin and sugar then boiling down, the amino acids in the soy sauce and the sugar react and the goal is to create a delicious glaze and a nice scent that stimulates the appetite.

Adding a small amount of soy sauce when making rolled egg omelets has the effect of enhancing and bringing out the flavor and sweetness of the ingredients.

Soy sauce is generally overshadowed by the sushi topping and vinegar rice, but soy sauce plays an important role in bringing out and enhancing the delicious taste of the sushi.

We hope this information will be helpful.

Revision date: October 16, 2017

Sushi Sho (in Hawaii)

Sushi Sho (in Yotsuya) is a restaurant where you cannot make a reservation easily. Its founder, Keiji Nakazawa, can be described with a keyword of having raised so many disciples. And the point, they run sushi restaurants that are also hard to make reservations, leads to how Nakazawa’s ideal sushi master should be. Having such a great intriguing personality, Nakazawa left his safe haven “Sushi Sho” in the hands of disciples. September 2016, he opened up Sushi Sho (in Hawaii) in The Ritz-Carlton Residences, Waikiki Beach on Oahu. We can’t take my eyes off that now.

Address:383 Kalaimoku St, Honolulu, HI 96815


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Revision date: October 9, 2017

10 pieces of sushi we recommend for October

Bastard halibut (Hirame)

Young Japanese amberjack (Inada)

Swordtip squid (Kensaki ika)

Lean meat of tuna (Akami)

Medium Fatty Tuna (Chutoro)

Gizzard shad (Kohada)

Alaskan pink shrimp (Ama ebi)

Mackerel (Saba)

Pacific saury (Sanma)

Japanese conger (Anago)

We hope this information will be helpful.

Revision date: October 1, 2017

Kozasazushi (in Shimokitazawa)

Kozasazushi (in Shimokitazawa) was opened by the legendary sushi chef, Shuzo Okada (passed away in May 2004). His successor, Tsutomu Nishikawa was, of course, his apprentice. The Omakase course is not an option at this restaurant. The only way to order is to look at the topping board and choose for yourself. This is a shop for experts and may be difficult for guests who can’t read or speak Japanese.

Address:3-7-10 Daizawa Setagaya-ku, Tokyo (10 minutes walk from Shimokitazawa Station)

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Revision date: September 29, 2017

A Guide to Avoiding Food Fraud!

It is true that in an age when aquatic resources are being depleted, there is a worldwide demand for a substitute for luxurious fish. However, although it’s not easy to tell fish apart once it’s sliced, that doesn’t mean that restaurants should not be held to certain standards. Here we present a number of severe cases.

First of all, Opah belly meat with some fat is used for the tuna in Negi-toro (tuna minced with Welsh onion leaves). Opah is widely distributed in warm seas and it’s known to be inexpensive with a smooth taste. The price is less than 1/100 of the Pacific bluefin tuna and if possible Negi-toro made from Opah should be avoided.

Next let’s discuss Japanese conger, an essential Edo-style sushi topping. A substitute for Japanese conger is the Common snake eel, which is a type of sea snake from Peru. The taste is pretty good, but the skin is rubbery and it doesn’t stick to the Shari (vinegar rice) so it’s instantly apparent that it’s a substitute fish. If you find Japanese conger at kaiten-zushi for JPY 100 per plate, you might want to question the source.

A premium sushi topping is the Mirugai clam (also called Hon-miru). This shellfish is characterized by its unique texture and taste. Instead the Japanese geoduck (Shiro-miru) is used, which sells for half the market price. However, the taste of the two is so similar that even Sushi Tsu has mistaken them, which is great news for dishonest dealers.

In April 2015 the Food Labeling Act was revised, leading to progressive reduction of fraudulent labels, but it is not a solution that eradicates dishonest dealers so consumers need to be educated and aware.

We hope this information will be helpful.

Revision date: September 21, 2017

So verhalten Sie sich in einem Sushi-Lokal richtig

Hier lernen Sie alle Benimmregeln, die nicht nur in Sushi-Lokalen, sondern in allen Gaststätten Japans gelten. Das Wichtigste ist wohl, auf andere Rücksicht zu nehmen sodass sich andere Gäste im Lokal nicht gestört fühlen. Rücksichtnahme – das ist wohl das Wesentliche im japanischen Leben. Bitte merken Sie sich die hier aufgeführten Punkte.

・Bitte kommen Sie nicht zu spät, halten Sie die Reservierungszeit ein.

・Bitte nehmen Sie den Ihnen zugewiesenen Platz

・Selbstverständlich ist es absolut unerwünscht, im betrunkenen Zustand laut zu reden oder andere Gäste anzupöbeln

・Aufdringliche Gerüche wie zu starke Parfüms sind nicht erwünscht

・Rauchen ist natürlich nicht erlaubt

・Wenn Sie Fotos machen wollen, fragen Sie bitte vorher den Geschäftsinhaber und die anderen Besucher um Erlaubnis

・Es gibt zwar keine bestimmte Kleiderordnung, doch es ist ratsam, sauber und dem Anlass entsprechend gekleidet zu sein.

・Telefonieren im Lokal ist nicht erlaubt

・Legen Sie bitte keine kantigen Gegenstände wie Ihr smartphone oder Ihre Uhr auf die Sushi-Theke, da diese aus empfindlichem Holz gemacht ist

・Sich all zulange mit dem Sushi-Meister zu unterhalten ist kein wirklich cooles Benehmen

・Bestellen Sie bitte nicht immer nur Sushi mit dem gleichen Belag

・Ein Ihnen vorgesetztes Sushi sollte sofort verzehrt werden. Optimal ist: Innerhalb von 10 Sekunden.

・Mit der Hand oder Stäbchen – Sie können Sushi essen, wie Sie wollen

・Um das delikate Gleichgewicht von Reis und Sushi-Belag optimal zu geniessen, sollte man am besten das ganze Sushi-Stück in den Mund stecken. In diesem Sinne ist davon abzuraten, den Belag vom Reisklumpen zu trennen.

・Fische und Meeresfrüchte aus natürlichem Fang schmecken in der jeweiligen Saison am besten. Wir empfehlen, saisongerechte Beläge zu wählen.

・Dippen mit zu viel Sojasauce ist nicht ratsam. Der Sushireis saugt die Sojasauce schnell ein und dann zerfällt der Reis in Klumpen. Zu viel Sojasauce stört auch den feinen Geschmack des weissen Fischfleischs.

・Eine geregelte Reihenfolge gibt es beim Sushi-Essen nicht. Sie können völlig frei wählen, mit welchem Sushi Sie starten und welchen Sie als nächsten essen.

・Ein echter Sushi-Kenner bleibt nicht noch lange sitzen, wenn er fertig gegessen hat. Sich nach dem Essen zu lange in einem Sushi-Lokal aufzuhalten, gilt in Japan als uncool.

We hope this information will be helpful.

Revision date: September 5, 2017

10 pieces of sushi we recommend for September

Bastard halibut (Hirame)

Gold Tilefish (Amadai)

Lean meat of tuna (Akami)

Medium Fatty Tuna (Chutoro)

Gizzard shad (Kohada)

Benito (Katsuo)

Mackerel (Saba)

Greater Amberjack (Kanpachi)

Salmon roe (Ikura)

Red sea urchin (Aka uni)

We hope this information will be helpful.

Revision date: September 1, 2017

Is Sushi made by a Master Really Transparent?!

Some of the shari drops off of the sushi placed in front of you by the chef saying, “Sorry to keep you waiting.” You may be served this kind of nigiri sushi at restaurants that have lines out the door. Of course sushi that falls apart before it even touches your lips is a failure.

Good nigiri sushi looks solid, but once you put it in your mouth the shari naturally loosens. Next the loosened rice absorbs the taste of the topping and it doesn’t stick to the roof of your mouth. On the other hand, with shari of sushi that has been pressed too strongly, the taste of the topping is left in your mouth, getting in the way of new flavors.

In other words, the sushi looks hard on the outside, but it soft on the inside. This is the perfect recipe for sushi.

When first learning, chefs are only concerned with shape and press the pieces too firmly. Next they let up on the force a bit and once they find the perfect amount of pressure, they become a real sushi chef. A master sushi chef is one rank above that and makes sushi that light can pass through. The sushi must be pressed gently enough for light to pass through, but firmly enough so that the sushi holds its shape.

We hope this information will be helpful.

Revision date: August 28, 2017

Is there a certain order for eating sushi?

Generally, start by eating fish with a lighter flavor like white fish and move onto fish with a heavier flavor such as Toro, Uni, Japanese conger (Anago), and then Egg (Tamagoyaki). Finishing with Seaweed rolls at the end is a typical way.

The following menu is an omakase style at one famous restaurant in Ginza. Begin with white fish?

Marbled flounder (Makogarei)

Striped jack (Shima aji)

Golden cuttlefish (Sumi ika)




Gizzard shad (Kohada)

Common orient clam (Nihamaguri)

Horse mackerel (Aji)

Kuruma prawn (Kuruma ebi)

Japanese halfbeak (Sayori)

Common octopus (Madako)

Mackerel (Saba)

Ark shell (Akagai)


Salmon roe (Ikura)

Japanese conger (Anago)

And Egg (Tamagoyaki) comes last, just along the general order. Perhaps the way this owner serves might have become common.

To maximize each flavor of toppings, have some pickled ginger or hot tea between different types of sushi for cleansing your palate. You don’t really have to stick to the specific order, though. It seems like having customers eat freely is the idea held in common by most sushi chefs. However, it is true that you won’t be able to taste the next flavor after eating something rather sweet. Japanese conger (Anago), Egg (Tamagoyaki), and Kanpyoumaki should be eaten at the end.

We hope this information will be helpful.

Revision date: August 28, 2017

Tuna fattening

Fish farming is to hatch fish from eggs or to raise from juvenile fish right after hatching. Imported fish farming tuna, which is out in the market now, is actually fish fattening tuna that is raised bigger by feeding to full-grown fish. Fish fattening is to catch tuna by fixed net fishing method when they are skinny after egg-laying, and to fatten by feeding wild fish such as sardine and mackerel for three months.

We hope this information will be helpful.

Revision date: September 26, 2017

10 pieces of sushi we recommend for August

Bartail flathead (Kochi)

Spotted halibut (Hoshigari)

Striped jack (Shima aji)

Shin-ika Golden cuttlefish (Shin ika)

Southern Bluefin tuna (Minamimaguro)

Gizzard shad (Kohada)

Kuruma prawn (Kuruma ebi)

Horse mackerel (Aji)

Disk Abalone (Awabi)

Northern sea urchin (Kitamurasaki uni)

We hope this information will be helpful.

Revision date: August 31, 2017


Why is sushi so good for your health?

The seafood used in creating sushi are very nutritious products. There has been particular research into the health benefits of Docosahexaenoic acid (DHA) and Eicosapentaenoic acid (EPA), which are present in the fat of fish. The vinegar used is also good for your health. It lowers blood pressure and helps relieve fatigue. And depending on the size of the sushi, a meal is only about 450 to 600 calories if you eat 10 pieces. It is a much healthier option when you compare it with the 600 calories in a 200g sirloin steak. Let’s take a closer look at the nutrients found in sushi and how you benefit from them.

The essential fatty acid DHA is found in all fish and shellfish and has the effect of keeping the brain active and preventing aging. Fatty tuna contains a lot of calories, but it also has the most DHA of any sushi.

EPA, another essential fatty acid, may lower cholesterol in the blood and reduce the neutral fat, helping with circulation. This is found in large quantities in silver-skinned fish, shad, horse mackerel, mackerel and sardines.

Taurine is an amino acid, and a component that is present in almost all tissues of the body, but it is found particularly in crustaceans such as shellfish, shrimp and octopus. It has the effect of stabilizing blood pressure, preventing high blood pressure and arteriosclerosis, and lowering cholesterol levels in the blood.

Vitamin A is abundant in sushi such as eel and urchin. It is said to improve eye function, preventing eye fatigue and stopping deteriorating vision. It may also improve the skin and mucous membranes, having an anti-aging effect.

Some people say, to help prevent cancer, it is important to consume adequate amounts of vitamins A, C, E and dietary fiber. Vitamin A acts to suppress the growth of cancer. Vitamin C acts to suppress the production of carcinogenic substances. Vitamin E has the function of preventing senescence of somatic cells. It is thought that dietary fiber has the effect of cleaning the intestines and preventing colon cancer.

As an example, sea urchin is rich in vitamin A, but at the same time it contains a lot of vitamin E useful for preventing aging. The green tea consumed when eating sushi contains Vitamin C, and the dried gourd (kampyo) at the end of the course contains plenty of dietary fiber.

As you can see, sushi is not only delicious, it is also scientifically proven that it is good for health. Just be careful to not overeat sushi with too much fat content like fatty tuna, or pieces with a lot of sugar such as conger eel.

We hope this information will be helpful.

Revision date: August 21, 2017




Tsujiki wholesale fish market

We went to Tsujiki wholesale fish market today also, and actually got to enter at the time all food professionals are buying and selling.

The tuna auction begins at 5:00 am. Then about 6:30 am, intermediate wholesalers start lining up their winning bid tuna. Therefore, it is around the time when people like masters from sushi restaurants come to buy fish. Once professional deals settle down at 10:00 am, all the other visitors and foreign tourists are allowed to get in the market.

What exactly is the difference between on what is going on before and after 10:00 am? That is how determined sellers and buyers are. It is entirely full of sprit because it is a place for exchanging valuable information.

This is one situation I saw how they interact. As they talk about how Tuna, air transported from Boston, is fatty but doesn’t have any flavor of Tuna compared to the inshore ones, they let me try a piece. The one from inshore definitely tastes more as Tuna for sure.

“I’ll take about a 20cm width of the belly, around this part of the inshore one.”

“That will be around 4.3kg?”

Pro talk, isn’t it?

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Revision date: August 15, 2017





















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Revision date: August 10, 2017

All about the Kuruma Prawn, a dish that has been around since Edo-style sushi was invented. Once you try it, you’ll never want any other shrimp.

Cultured shrimp is imported to Japan from India, Vietnam, Indonesia, and other places and it used in a lot of nigiri sushi. The shrimp used in sushi rolls is generally the giant tiger prawn. It is used because the price is cheap and it becomes a beautiful vermilion color when boiled. Unfortunately, it doesn’t have the sweet taste normally associated with shrimp.

On the other hand, the Kuruma prawn that is offered at Edo-style sushi restaurants has a rich aroma and sweetness than spreads over your tongue. It is also becoming more popular to boil it just before serving it to the customers. By doing this, the warmth enhances the sweetness of the shrimp.

The old Edo-style sushi restaurants will also ferment the shrimp in eggs scrambled with sweet vinegar (yolk soaked in vinegar) for several days. When the Kuruma prawn is soaked in the egg, its umami is enhanced and its pleasant acidity is delicious.

By the way, when you boil the shrimp, it normally bends towards the belly. Crooked shrimp cannot be used for sushi, so a few cuts are made in the ventral to stop it from bending and it is cut along the muscles or from head to tail and skewered before boiling. You still have to be careful it doesn’t bend when you peel off the shell. Therefore, even just the way a Kuruma prawn is boiled demonstrates the skill of a sushi chef.

We hope this information will be helpful.

Revision date: August 7, 2017