Tag Archives: tuna

Tuna Species (amended & expanded)

I noticed that many friends all over the World are anglers and fish lovers.
Here is some useful information on the most popular fish in Japan (and in Spain, too), namely Tuna!

Kuromaguro/Blue Fin Tuna


Tuna or “Maguro” is the most popular fish for sushi and sashimi lovers in Japan (and abroad). It is said that more than 60% of total catch is consumed in Japan alone (and probably a lot higher depending on species). Incidentally, Japan is not the single bigger consumer of fish. Spain is!

Now, there is tuna and tuna. Briefly said, there are many species with many names and very different price tags as well!

The first species I would like to introduce is “Kuromaguro”, or Blue Fin Tuna (or Tunny).
It has many other names in Japanese: Honmaguro, Maguto, Meji,Yokowa, Shibi, Imoshii, Shibimaguro, Kuroshibi, and Hatsu!

The best are caught in Winter mainly in the seas off Kochi (Shikoku Island), Miyagi (Honshu Island) and Hokkaido Prefectures.
This variety is the most expensive and can reach astronomical prices, especially caught in Winter off Hokkaido.
Imported Kuromaguro usually reaches Japan frozen, but in recent years the fish has been successfully raised in semi-wild environments in Spain, Australia and Croatia and arrives in Japan fresh by plane.
Import and sale of Kuromaguro are monopolised by the Japanese trade associations, unless you are lucky enough to catch one (careful here, as poaching is a major offense in Japan!).
Between you and me, if you want to eat Kuromaguro sashimi, it might come cheaper if you do it while travelling in Spain!
Did you know that Japanese importers will fly to Spain and other countries just to check that the fish are bled properly?

Now the good news for people who think that Bluefin Tuna might disappear from the oceans is that Japan has successfully raised the fish from the egg till fish reaching more than 30 kg in no less than three locations in Japan!
I predict that Japan will export tuna within 10 years!

Kuromaguro Otoro (fat part)

Kuromaguro Chutoro (semi-fat part)

Kuromaguro Akami (lean part)


Mebachi/Big-eyed Tuna


Mebachi or Big-eyed Tuna, a fairly reasonable kind of tuna, is especially popular for its “akami” (lean part)


It has different names according to the areas: “Darumashibi” (Mie Prefecture), “Mebuto” (Kyushu). In Tokyo, Shizuoka and Wakayama, it is called “Daruma” when caught at a young age.
The best seasons for catching are during the rainy season or the Fall.
This kind of tuna is mainly caught off the shores of Miyagi, Kagoshima, Kochi, Shizuoka, Kanagawa and Hokkaido Prefectures.

As said before, it is mainly appreciated for its lean beautiful red flesh, but also cooked and grilled as “kama”:
In the fall it is also a source of toro (fatty part) when kuromaguro is not available.
In recent years it has been extensively caught in the Pacific, Atlantic and Indian Oceans and in the Mediterranean Sea. It also comes frozen from Chile, Peru and North America. It is also flown fresh from Australia, Indonesia and New York. A lot equally comes frozen from South Korea and Taiwan.


Kihada: Yellowfin Tuna


“Kihada maguro” or Yellowfin Tuna” will appear on our tables from early summer.
It is mainly caught off Shizuoka, Miyagi and Kochi Prefectures coasts.
Like all other fish it is called other names in different regions:
Kiwada, Itoshibi (Wakayama, Kochi, Kyushu), Shibi (Kyusyu, Osaka), Ban (Osaka) and Tuna Kajibi (Okinawa)
Kihada roams over many seas between 30 degrees north latitude and 30 degrees south latitude and even wider depending on the season.
Most of the fish caught in Japan is served locally as sashimi:
Very recognizable for its pinkish colour.
It is also widely appreciated as Zuke (first lightly grilled, then dipped into ice water before being cut into thin slices) on nigiri:
A lot is imported frozen.
In Shizuoka try to go for the freshly caught samples coming from Yaizu or Numazu Fishing harbors.


Minamimaguro/Southern Blue Fin Tuna


Minamimaguro or Southern Blue Fin Tuna could be called a true Shizuoka Prefecture tuna as our Prefecture accounts for 30% of the total in Japan!
Like all fish it has different names: Indomaguro, Goushyumaguro, Bachimaguro.
In Autumn it is mainly caught off Australia, New Zealand, Capetown (South Africa) in the Southern Hemisphere and off the coasts of Shizuoka, Kochi, Kagoshima and Miyagi Prefectures in Japan.
Mianmimaguro is comparatively cheaper than its fellows as it contains little fat, which on the other hand makes it very easy to freeze and preserve.
Regardless of the lack of fat, it makes for excellent sashimi, sushi and various parts are succulent grilled or cooked.
The parts discarded by humans make for a lot of cat food!


Binnaga/Albacore Tuna


Binnaga or Albacore is very often called Tonbo Maguro in Japan. It is also known under the name of Binchyou.
It is caught in the Summer off the coasts of Miyagi, Kochi, Mie and Miyazaki Prefectures.
This is probably the cheapest kind of tuna available in Japan apart of Marlin.
It makes for most of the cheaper tuna sashimi in supermarkets.
I personally like it fried in large slices before eating them as tuna hamburgers. Absolutely delicious and far healthier than a McDonald’s (let them sue me!)!
For people who want to try their hand at making “tataki”, it would be the perfect first step into Japanese gastronomy.
It is also vastly used by canneries under the name of “Sea Chicken”.
It is probably the most popular tuna species outside Japan.


Mekajiki/Big-eye Marlin


Strictly speaking, marlins are a different branch from tuna, but as it is so often offered as a substitute for true tuna, I decided to introduce it as such.
There are many types of marlins all over the world, but the most commonly caught and eaten is “Mekajiki”/Big-eye Marlin.
It is found in various supermarkets and cheap izakaya. Still it is a very popular as sashimi as well as grilled fish. Even in my home country, France, it is served as “Carpaccio”.
It is caught all around Japan from Atumn to Winter.
It is also called “Meka” in Tokyo or “Mesara” in Kanagawa Prefecture.
Sashimi varieties came in two main kinds: “kuro” and “shiro”.
“Makajiki” (“true marlin”) is peach pink while “Mekajiki” (“big-eye marlin”) is of a whitish orange.
More than 1,000 tonnes are caught off Japan, whereas imports amount to more than 1,100 tonnes.
In Europe and America it is popular as canned food or grilled.
One can enjoy it as cheap “nigiri” in sushi restaurants.
Fresh marlin should be shiny and show veins bright red.
It is mainly caught at night as it swims near the surface then.


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Marinated Tuna Sushi/Magurozuke Sushi

Whenever tuna is available one ought to taste it raw as sashimi or sushi.
Now, avaibility does not always mean quality.
On the other hand, the Japanese have a simple and delicious way to accomodate tuna of any quality: magurozuke, which basically means marinated tuna, a concept easy to understand anywhere in our world!
Here is a basic recipe you can easily improve and adapt. I can guarantee you that your friends will look at you with a different eye!


-Tuna: raw for sashimi, enough for a plate of sushi
-Sushi rice: as appropriate. Check Sushi Rice Recipe here!

-Soy sauce: 2 tablespoons
-Japanese sake: 2 tablespoons
-Mirin/Japanese sweet sake: 1 tablespoon
-Chopped thin leeks: as appropriate
-Wasabi paste: as appropriate


-Prepare the marinade: In a bowl drop the soy sauce, Japanese sake, mirin and chopped leeks. Mix quickly.
Slice the tuna for sushi. Take care of slicing it in equal size (especially thickness) slices!
Drop all the slices inside the marinade. Stir gently so as all fish is marinated. Cover with cellophane paper and leave inside the fridge for at least 30 minutes.

-Prepare the rice balls/shari in a slightly elongated size. Remember that the rice balls/shari should be slightly narrower and shoter than the tuna slices.
Smear a little wasabi paste on top of each rice ball. Skip if you don’t like wasabi. On the other hand you could top the nigiri (taht is on top ofthe fish, not the rice ball) with a little grated ginger!
Take tuna slice out one by one, shake them over the marinade bowl to let run excess marinade (do not sponge it off!), place a slice on each rice ball firmly enough (no need to overpress it between your hands, or you will have marinade everywhere!).
Place on a service dish and eat as soon as possible.

Easy and so impressive!

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