What is Goldeye rockfish (Usumebaru) sushi?

a photo of Goldeye rockfish (Usumebaru)
Rockfish (Mebaru) is one of the primary fish found in the coastal waters of Japan. Characterized by their large bulged eyes, rockfish are highly prized species. There are a variety of types of rockfish (mebaru) in Japan.

What is Rockfish (Mebaru)?

Rockfish (Mebaru) are distributed over a relatively wide area from southern Hokkaido to Kyushu, the Korean Peninsula, and elsewhere. They inhabit rocky reefs at depths of 50 to 150 meters. The length of the fish is 20-25 cm.

There are several species of rockfish (Mebaru): Aka-mebaru (Sebastes inermis Cuvier,1829), Kuro-mebaru (Sebastes ventricosus Temminck and Schlegel,1843), and Shiro-mebaru (Sebastes cheni Barsukov,1988), which are generally called mebaru. However, the three species are so similar in appearance that it is difficult to distinguish them at a glance.

The fish is caught by pole-and-line and longline fishing starting around March, and becomes fat and oily by April when the water temperature begins to rise. Anglers are most likely to catch Kuro-mebaru. They are mainly eaten simmered or grilled.

However, the fish is poisonous in its dorsal fin, so it is important to be very careful when handling it. Because it is a very small amount of poison, it is a cause that is neglected, but there are times when serious symptoms appear.

What does Goldeye rockfish (Usumebaru) sushi taste like?

Sushi chefs use a species called Goldeye rockfish (Usumebaru), which is found in deeper waters offshore. The maximum length of the fish is 35 cm. The main production areas are Aomori and Yamagata prefectures.

Goldeye rockfish is a member of the scorpionfish family, but it is less fishy than scorpionfish and has a very light flavor with firm flesh. It has little fat and a light aftertaste, making it a good pairing with sushi rice. When served as nigiri sushi, it is also good to use Kobujime. Although the market availability is stable, it is traded at a high price.

We hope this information will be helpful.

Revision date: May 26, 2023

Share this article

What is the difference between fermentation, putrefaction, and maturing?

a photo of soysauce

In academic terms, “fermentation” is a reaction that uses no oxygen to break down carbohydrates to obtain energy. On the other hand, the reaction that uses oxygen to break down organic matter to obtain energy is called “respiration”.

In more familiar terms, microorganisms such as lactic acid bacteria, koji-mold, and yeast break down organic compounds such as carbohydrates and proteins to produce a variety of by-products to obtain energy in their own life activities. Among these, “fermentation” is a phenomenon in which beneficial substances are produced for humans, while “putrefaction” is a phenomenon in which harmful substances are produced for humans. Food spoilage can be detected by the five senses, such as smell, appearance, and taste.

What is the difference between fermentation and maturing?

While “fermentation” and “putrefaction” are caused by microorganisms, “maturing” is a process in which the food itself is transformed by enzymes and other substances to produce something beneficial to humans. Or, “maturing” is the process of improving the flavor and quality of food by allowing it to rest under controlled temperature and humidity after fermentation is complete. Maturing is said to be beneficial to humans because it changes the texture and taste of the fish, making it tastier.

In case you are wondering, “enzyme” is mainly composed of protein, which promotes chemical reactions such as digestion, absorption, and metabolism that are necessary for all living things, including humans, animals, and plants, to survive. It is said that there are approximately 5,000 enzymes in our body, but each enzyme is a specialist that performs only one function and is largely divided into “Digestive enzymes” and “Metabolic enzymes.

We hope this information will be helpful.

Revision date: May 25, 2023

Share this article

What is Barfin flounder (Matsukawagarei) sushi?

a photo of Barfin flounder (Matsukawagarei)
Barfin flounder (Matsukawagarei) is large flat fish inhabiting cold sea water basins in the northern Pacific off Japan. It is suitable for aquaculture and resource enhancement in Hokkaido due to its high commercial value and growth rate at low temperatures.

What is Barfin flounder (Matsukawagarei)?

Barfin flounder (Matsukawagarei) is distributed along the Pacific coast north of Ibaraki Prefecture and in the Sea of Japan north of Toyama Prefecture, the southern Sea of Okhotsk, and the Kurile Islands. It inhabits sandy muddy areas at depths of up to 200 m, feeding mainly on crustaceans and small fishes. The maximum length of the body is 80 cm.

It is similar in appearance to the closely related Spotted halibut, but the Barfin flounder has banded black spots on its fins, while the Spotted halibut has circular ones. The name ” Matsukawagarei ” is said to come from its scales, which are hard and resemble the epidermis of a pine tree. Barfin flounder is now very rare in the wild, and most of the fish caught are released juveniles. This is based on the habit of flounder species to remain in the waters where they are released. The main production areas are Hokkaido, Aomori, and Iwate prefectures, and the season is winter. The scientific name is Verasper moseri Jordan & Gilbert, 1898.

What does Barfin flounder (Matsukawagarei) sushi taste like?

a photo of Barfin flounder (Matsukawa) nigiri sushi
The standard Japanese name is Matsukawa, not Matsukawagarei.

Barfin flounder (Matsukawagarei) tastes better in larger sizes, and the males are tastier than the females. Its flesh is firm, and when fresh, it tastes better when thinly sliced. The umami increases after about two days of maturing, as is the case with other flounders.

Barfin flounder, along with spotted halibut, is a high-end fish, and if asked which is more delicious, barfin flounder or spotted halibut, most people would probably say spotted halibut. However, the reason may be that they are not familiar with Barfin flounder. As proof of this, you will almost never see it at high-end sushi restaurants in Tokyo, but it is not that uncommon at high-end restaurants in Sapporo.

We hope this information will be helpful.

Revision date: May 9, 2023

Share this article

What is Silver pomfret (Managatsuo) sushi?

a photo of Silver pomfret (Managatsuo)
Silver pomfret (Managatsuo) is a very tasty fish. In the Kansai region, it is such a high-class fish that it is served at Kyoto’s top-class ryotei restaurants, and if fresh, sashimi is said to be superb.

What is Silver pomfret (Managatsuo)?

Silver pomfret (Managatsuo) is distributed in a wide range of waters from Hokkaido to the southern Sea of Japan, the Pacific Ocean, the Seto Inland Sea, the Ariake Sea and other seas around Japan to the East China Sea, the South China Sea and the Indian Ocean.

They feed on crustaceans such as jellyfish and krill as well as plankton while migrating in schools to sandy muddy bottoms on continental shelves at depths of around 200 m or in the surface layer not far from the coast.

In the waters around Japan, Korean pomfret (Pampus echinogaster (Basilewsky, 1855)) and Silver pomfret (Pampus punctatissimus (Temminck and Schlegel, 1845)) are caught, but they are not well differentiated in the market.

The name “Managatsuo” might lead you to think that it is a member of the Katsuo family, but it is not at all, it is a member of the Ibdai family.　Its name comes from the fact that Katsuo could not be caught in the Seto Inland Sea, so this species was called Katsuo. So, it is said that the name was derived from “mane katsuo,” which imitated katsuo.

It is also said that there is no salmon in the Kansai region and no Managatsuo in the Kanto region. In the Kanto region, it is a rare fish, but in the Chubu region and west, especially in the Kansai region, it is a high-class fish that is often used in ryotei and kappo restaurants. It is also used in French and Chinese cuisine, so it is familiar to a wide variety of chefs.

What does Silver pomfret (Managatsuo) sushi taste like?

a photo of Managatsuo nigiri
The royal road to eat in sashimi is the Silver pomfret (Managatsuo), the broiled only the skin using a burner, while confining the umami in the subcutaneous fat, also the fragrant flavor of the broiled skin.

 

Silver pomfret (Managatsuo) has a shiny body that looks like it has been stamped with silver foil, and the sashimi is superb, but this is only in Kansai where fresh fish is available.

The flesh is shiromi, soft and smooth, with little fat and a light flavor. Not only sashimi, but saikyo-zuke (fish pickled in sweet Kyoto-style miso) is also an excellent dish. Also, it can be frozen and preserved while it is still fresh, as it does not lose its flavor when frozen compared to other fish.

Silver pomfret has 70.8 grams of water per 100 grams, more than Japanese spanish mackerel (Sawara), a typical watery fish. This is a fish that, in the past, would not be suitable for nigiri sushi at all. Besides, fresh ones are difficult to obtain in the Kanto region, so sushi topping is almost never offered at Edomae sushi restaurants. But when it is made into shiojime and the moisture is controlled, it is a first-class sushi topping.

Recently, young sushi chefs in Tokyo have discovered its deliciousness and have begun to make it. This sushi topping goes well with shari made with red vinegar, which contains a lot of amino acids. In any case, sushi topping is rare, so if you can find it, you should definitely try it.

We hope this information will be helpful.

Revision date: May 5, 2023

Share this article

What is Bigeyed greeneye (Mehikari) sushi?

a photo of Bigeyed greeneye (Mehikari)
Bigeyed greeneye (Mehikari) was not often on the dinner table as a small fish in the past, but it seems that modern tastes have gradually caught up with it because of its lightness and abundant fat content characteristic of white fish.

What is Bigeyed greeneye (Mehikari)?

Bigeyed greeneye (Mehikari) is distributed south of Sagami Bay to the East China Sea. They live in groups on continental shelf slopes at depths of 200 to 600 meters. Mehikari (standard Japanese name is Aome-eso) with large, striking green eyes are about 20 cm long. Its body is elongated and cylindrical, and it has an issuer around its anus, where bacteria living symbiotically inside emit light. The season is winter, and the main production areas are Fukushima, Shizuoka, Miyazaki and Aichi prefectures.

The scientific name is Chlorophthalmus albatrossis Jordan & Starks, 1904. In the market, Bigeyed greeneye (Chlorophthalmus borealis Kuronuma & Yamaguchi, 1941) and Humpback greeneye (Chlorophthalmus acutifrons Hiyama, 1940) are distributed as the same Mehikari without distinction.

What does Bigeyed greeneye (Mehikari) sushi taste like?

Bigeyed greeneye (Mehikari), despite its appearance, is a delicious fish with light white flesh and a fluffy texture. However, since it is caught by bottom trawl fishing, it is only available for sashimi within two days of being caught, and the amount of fresh fish in distribution is rather small. Therefore, it is difficult to eat nigiri sushi outside of the area where it is caught. The sushi topping is a specialty of Sushi Itou in Iwaki City.

We hope this information will be helpful.

Revision date: May 4, 2023

Share this article

 

What is Flying fish (Tobiuo) sushi?

a photo of Flying fish (Tobiuo)
Flying fish (Tobiuo) can be seen jumping out of warm ocean waters worldwide. It is thought to have evolved this remarkable gliding ability to escape predators, of which they have many. Their pursuers include mackerel, tuna, swordfish, marlin, and other larger fish.

What is Flying fish (Tobiuo)?

Flying fish (Tobiuo) is distributed in warm seas south of central Honshu and around Taiwan, living in the surface layer from the coast to offshore. Its body length is about 30 cm. Its body is long and slender, and its pectoral fins are large and wing-like, used for flying above the sea surface.

It migrates northward from southern Japan in the spring with rising water temperatures and southward in the autumn with falling water temperatures. Flying fish usually migrate near the surface of the ocean in schools, reaching speeds of 35 km/h on the surface and 55 km/h in the air, depending on the species and size of the flying fish. They also glide like gliders at a height of 4 to 5 meters and a distance of 100 to 500 meters in a single flight.

The name Tobiuo (Flying fish) is used as a generic name for the Exocoetidae, but the Narrowtongue flyingfish, which is typical of the waters around Japan, is distinguished by the name Hon-tobi. It is 30 to 35 cm in length and migrate northward in schools on the Kuroshio Current, approaching the coast from April to July to spawn. Another representative Tobiuo is the slightly smaller Dark-edged-winged flyingfish (Hoso-tobi), also known as Maru-tobi or Nyubai-tobi. The scientific name is Cypselurus agoo (Temminck and Schlegel, 1846).

What does Flying fish (Tobiuo) sushi taste like?

Flying fish (Tobiuo) is fresh if it has a shiny surface and shiny blue-black back, and if its eyes are clear. The freshness of the flying fish is also assured by the fact that its digestive tract is small and the food it eats is immediately expelled from the digestive tract. Fresh fish is the best choice for sashimi. The flesh is slightly soft, not too watery, light, and has no peculiar taste. However, sushi topping is not generally used for Edomae sushi.

a photo of Ago dashi
Ago-dashi has a refined taste and flavor. It is used in various dishes ranging from miso soup to simmered dishes. Especially it goes well with Ramen (noodles).

Flying fish is also called “Ago” in Japanese. “Ago” is the dialect around Nagasaki.　Flying fish, which contains less fat than other fish, is dried and used as dashi (fish stock). Dashi of dried flying fish is called “Ago-dashi”. This is one of the highest-quality dashi.

We hope this information will be helpful.

Revision date: April 28, 2023

Share this article

What is Spotted knifejaw (Ishigakidai) sushi?

a photo of Spotted knifejaw (Ishigakidai)
Spotted knifejaw (Ishigakidai) is distributed along the coasts of the Sea of Japan, the East China Sea, and the Pacific Ocean from the entire coast of Hokkaido to the southern coast of Kyushu, the Izu Islands, the Ogasawara Islands, Yaku Island, Okinawa Island, and Okinotori Island.

What is Spotted knifejaw (Ishigakidai)?

Spotted knifejaw (Ishigakidai) is distributed along the Pacific coast south of Ibaraki Prefecture and along the Sea of Japan south of Yamaguchi Prefecture to the South China Sea. It inhabits mainly rocky reefs. The length of the body reaches 90 cm.

The ecology and habits are similar to those of Barred knifejaw (Ishidai), but young fish are generally brownish with numerous blackish-brown stone wall (stone wall is ishigaki in Japanese) patterns scattered throughout the body. As the fish grows, the pattern becomes lighter, and in male adults it disappears completely. The season is summer.

Note that some of the larger Barred knifejaw and Spotted knifejaw (over 60 cm) may have Ciguatera poisoning. The scientific name is Oplegnathus punctatus (Temminck and Schlegel, 1844).

What does Spotted knifejaw (Ishigakidai) sushi taste like?

a photo of Spotted knifejaw (Ishigakidai) nigiri sushi
Spotted knifejaw (Ishigakidai) is a delicious white-fleshed fish very similar to Barred knifejaw with a tough and springy texture that makes it very chewy and gives it a light fragrance of the ocean when served as sashimi.

The meat of Spotted knifejaw (Ishigakidai) is firmer and tighter than that of Red seabream (Madai), and it is so chewy that it feels too hard to make sashimi if it has just died. Therefore, like puffer fish, usuzukuri (thinly sliced) is used for sashimi and sushi topping.

Spotted knifejaw has a more subtle scent of the sea than barred knifejaw. The color of chiai (dark red meat) is not a bright red, but rather a duller shade, but the meat is surprisingly fatty and delicious.

Nigiri sushi is also good with salt and kabosu. Its umami is thought to arise from eating sea urchins, shellfish and crustaceans. Both nigiri sushi and sashimi are rare in Tokyo, but common in Shikoku and Kyushu.

We hope this information will be helpful.

Revision date: April 26, 2023

Share this article

What is Whitebait (Shirasu) sushi?

a photo of Whitebait (Shirasu)
Whitebait (Shirasu) is a generic term used worldwide to describe small fish, often juveniles, which are collected in quantity and eaten whole.

What is Whitebait (Shirasu)?

Whitebait (Shirasu) is a generic name for juvenile fish without pigmentation, such as Pacific sand lance, Japanese eel, Japanese anchovy, Japanese sardine, round herring, Ayu, and Pacific herring. The most commonly seen Whitebait (Shirasu) in the market is the Japanese anchovy.

Japanese sardine spawns from winter to spring, round herring from April to June, and Japanese anchovy spawns all year round, but spawning peaks especially in spring and fall. Shirasu in spring are small but plump, and shirasu in fall are fatty, but each has its own unique flavor.

What does Whitebait (Shirasu) sushi taste like?

a photo of shirasu gunkan maki
Conveyor belt sushi restaurants made Whitebait (Shirasu) available for sushi.

Only raw Shirasu can usually be eaten only on the same day it is caught. Because of the rapid loss of freshness, it is not always possible to eat it even if you go to the area when the weather is slow or the catch is poor. Generally, this food has been preserved by boiling (釜揚げ) or sun-drying (天日干し).

Whitebait has a high water content, so it is good manners to eat it quickly once it is made into a Gunkan maki. Its rich flavor and bitterness go well with the refreshing vinegared rice, and the condiments used are green onions and ginger. It was a local sushi restaurant that popularized raw shirasu sushi, which is eaten when it is in season. These days, it is also available at conveyor-belt sushi restaurants, but this one is quick-frozen.

a photo of Shirasu sashimi
You can fully enjoy the elegant sweetness and sticky texture of fresh Shirasu.

On the other hand, Edomae sushi restaurants do not offer nigiri sushi, only serving it as Tsumami.

We hope this information will be helpful.

Revision date: April 21, 2023

Share this article

What is Blackfin Seabass (Hirasuzuki) sushi?

a photo of Hirasuzuki
The main habitat of blackfin seabass (Hirasuzuki) will be a rough ocean facing the open sea from autumn to spring, and it will not catch a calm day and catch when it becomes rough weather.

What is Blackfin Seabass (Hirasuzuki)?

Blackfin Seabass (Hirasuzuki) prefer warmer waters and are distributed south of the Boso Peninsula on the Pacific Ocean side, and south of Hokuriku on the Sea of Japan side, as well as in the southern part of the Korean Peninsula. Juveniles and young fish may be found near estuaries that connect to the open ocean, but as they mature, they move to areas of higher salinity and are not found in the brackish waters near estuaries.

It is very similar to the Japanese sea bass (Suzuki) only in the same genus, but is taller and more strongly laterally flattened than the Japanese sea bass. A large Blackfin Seabass exceeds 1 meter. The scientific name is Lateolabrax latus Katayama, 1957.

What does Blackfin Seabass (Hirasuzuki) sushi taste like?

a photo of Blackfin Seabass (Hirasuzuki)
This may be a bit of a challenging statement, but there must be very few sushi chefs using Blackfin Seabass (Hirasuzuki).

Blackfin Seabass is in season during the cold season, the opposite of Japanese sea bass. Unlike Japanese sea bass, blackfin seabass has a bright red, clear white flesh with no black streaks in the flesh. This makes it look better than Japanese sea bass when served as nigiri or sashimi. Another reason for the high price is that there are few arrivals at Toyosu Market. It used to fetch more than blackthroat seaperch (Nodoguro).

Blackfin Seabass are firm and fatty. Unlike Japanese sea bass, which lives in brackish water, Blackfin Seabass does not have a muddy smell, perhaps because it lives on rough reefs connected to the open sea. It is often described as having a taste similar to Isaki or Tai, for example, with a refined flavor and a sweet aftertaste. It is a top-quality fish that can replace Hirame, which is a representative winter shiromi.

We hope this information will be helpful.

Revision date: May 1, 2023

Share this article

 

What is Silver croaker (Ishimochi) sushi?

a photo of Silver croaker (Ishimochi)
Because it loses its freshness quickly, the average supermarket is unlikely to find fresh eating silver croaker (Ishimochi or Shiroguchi). The high-moisture content of the silver croaker is said to make it an exquisite dish when grilled with salt.

What is Silver croaker (Ishimochi)?

Silver croaker (Ishimochi or Shiroguchi) is distributed in the Tohoku region and southwards, the East China Sea, the Indian Ocean, and the western Pacific Ocean. It is mainly found on sandy mud bottoms at depths of 20~140m. Its body color is shiny silvery white with somewhat indistinct black spots on the tops of its gill covers. The Japanese name Ishimochi (Ishimochi means having the stones) is derived from the presence of large calcareous otoliths within the skull bones. The length of the body is about 40 cm. The season is summer. Caught in large quantities in the East China Sea by bottom trawl fishing, it is mainly used as a raw material for high-grade fish paste. The scientific name is Pennahia argentata (Houttuyn,1782).

What does Silver croaker (Ishimochi) sushi taste like?

Silver croaker (Ishimochi) can be eaten raw if fresh, and it goes well with vinegared rice. Its clear white flesh has a firm texture, but it is somewhat watery, so it is best served as sujime or yubiki.

There are many delicious white fish, but in terms of individuality, Silver croaker may be the top level among sushi toppings. Conversely, I am once again impressed by the power of vinegared rice that catches the peculiarities of Silver croaker. In the Kanto region, it is a popular fish for salted grilled fish, and it takes on a completely different flavor when grilled.

We hope this information will be helpful.

Revision date: April 19, 2023

Share this article

What is Blue mackerel (Gomasaba) sushi?

a photo of Blue mackerel (Gomasaba)
The blue mackerel is native to the tropical and subtropical waters of the Pacific Ocean. Its range extends from Japan to New Zealand, in smaller quantities it can also be found off the coasts of the eastern Pacific and in the Indo-Pacific.

What is Blue mackerel (Gomasaba)?

Blue mackerel (Gomasaba) is distributed south of Wakasa Bay on the Sea of Japan side and south of the Boso Peninsula to the East China Sea on the Pacific side and in the northeast Pacific off Australia, New Zealand, Hawaii, and Mexico. And recently, they have been appearing in southern Hokkaido due to rising sea temperatures near Japan. They migrate northward along the coast of Japan in summer in pursuit of prey, and after spawning, migrate southward in autumn. The season is summer.

Compared to Chub mackerel (also called Pacific mackerel), the Blue mackerel has a fuzzy, irregular pattern on its back and scattered black-gray spots on its belly. These spots are goma (sesame seed)-like, hence the name Goma (Sesame) mackerel. Chub mackerel, which are tall and flat, are called Hira (Hira means flat)-saba, whereas Blue mackerel is called Maru (Maru means round)-saba because of their round body. The length of the fish is about 40 cm. Its scientific name is Scomber australasicus Cuvier, 1832.

What does Blue mackerel (Gomasaba) sushi taste like?

a photo of Gomasaba nigiri sushi
There are different ways of preparing saba sushi. The most common variant today is marinated mackerel (shime saba) as nigiri sushi.

In Japan, most mackerel used for nigiri sushi is chub mackerel, and blue mackerel is rare. This is because Chub mackerel contains 16.8g of fat per 100g of edible part, while Blue mackerel contains only 5.1g of fat, so it is generally said to be inferior to Chub mackerel. On the other hand, Chub mackerel loses its flavor in summer, while Blue mackerel remains the same all year round.

But with the recent increase in catches, the reputation of Blue mackerel is changing. This is spurred by the appearance of blue mackerel that can be eaten raw. These include “Shimizu-saba (清水サバ)” from Kochi and “Kubiore-saba (首折れサバ)” from Kagoshima. Kubiore means “broken neck” and refers to a processing step after catching.

Mackerel is now also commonly served raw, but traditionally it is made with Sujime. The Sujime method, a preparation involving salt and vinegar, is used to preserve freshness, suppress odors and reduce the dominant inherent flavor of mackerel. The meat treated in this way is called Shime saba.

Some chefs sear the Sujime blue mackerel on straw to give it a savory aroma and soften the skin. Some chefs place Shiraita Kombu (a translucent thin slice of Kombu) on top of the topping to soften the acidity of the Sujime. We have a feeling that blue mackerel will be used in nigiri sushi from now on.

We hope this information will be helpful.

Revision date: April 17, 2023

Share this article

What is Black skipjack (Suma) sushi?

a photo of Black skipjack (Suma)
In western Japan, it is called “Yaito,” which means moxibustion, and the name comes from the black spot on the body of the Suma, which resembles the black mark of moxibustion.

What is Black skipjack (Suma)?

Black skipjack (Suma) is a migratory fish widely distributed from temperate to tropical zones in the Indian and Pacific Oceans. In the waters around Japan, it is found mainly in southern Japan, including Kyushu, Shikoku, and Okinawa. Because it does not form large schools, it is rarely caught in large quantities at one time and therefore is not sold in large quantities in the market.

It is a member of the mackerel family, so it is written “縞鰹 (striped bonito)” in Chinese characters because of its distinctive wave-like stripes. it resembles Bonito but can be distinguished by the presence of several black dots between the ventral and pectoral fins. Adults are about 40-50 cm in length, with the larger ones reaching about 1 m in length and some individuals weighing as much as 10 kg. In Micronesia and the Hawaiian Islands, it is an important food fish. The scientific name is Euthynnus affinis (Cantor, 1849).

What does Black skipjack (Suma) sushi taste like?

a photo of Black skipjack (Suma) sushi
In western Japan, this fish is served as sushi, sashimi, salted grilled, simmered, and fried fish.

Black skipjack (Suma) is a lean fish with thin skin and not so hard bones. Chiai (dark red meat) is bigger, though not as big as bonito. The flesh is lighter red than Frigate tuna, slightly softer, and greasier. The taste is lighter than Oriental Bonito.

Black skipjack, which is fatty, tastes like toro all over. Because of its outstanding flavor, it is also attracting attention as a substitute fish for tuna. Besides, its flesh does not shrink much when heated, making it suitable for a variety of dishes. The broth made from ara (bony parts) has a strong flavor and is a sign of a delicious fish. Some sushi restaurants are already using it as a sushi topping under another name, Yaito-gatsuo.

We hope this information will be helpful.

Revision date: April 15, 2023

Share this article

What is Tokobushi abalone sushi?

a photo of Tokobushi abalone
Many people may think of Tokobushi as small abalone, but it is in fact different from abalone.

What is Tokobushi abalone?

Tokobushi abalone is widely distributed from southern Hokkaido to Kyushu and Taiwan. It inhabits the reef zones along the coasts facing the open ocean in warm seas. It is oval in shape and has a shell length of 7 cm. In the past, people thought that the Tokobushi abalone was the child of the abalone.

Abalone has four to five water absorption holes, which are tubular, while Tokobushi abalone has six to nine water absorption holes, and the holes are more numerous and larger than those of abalone. Based on the amount of Tokobushi abalone caught, Kochi, Tokushima, and Mie prefectures are the production areas.

The average wholesale price of Tokobushi abalone at the Toyosu market is around US$30 per kilogram. Since domestic catches alone cannot keep up with demand, a large number of imports, mainly from Taiwan, are also distributed. The scientific name is Sulculus diversicolor supertexta (Lischke, 1870). A substitute is Luzon Tokobushi (Haliotis(Sulculus) glabra Gmelin, 1791), which is mainly processed into canned products.

Incidentally, Kinki University, which has succeeded in the complete cultivation of bluefin tuna, has been conducting research on Tokobushi abalone cultivation since 2014. The university succeeded in artificial hatching in the same year, and is currently continuing its research with the aim of achieving complete aquaculture.

What does Tokobushi abalone sushi taste like?

a photo of Tokobushi sushi
Tokobushi abalone is also used in preparations known as “nigai (煮貝)” or ni-awabi (煮鮑)”, whole abalones cooked with fish broth and soy.

Tokobushi abalone has a strong scent and taste similar to that of abalone, but its meat is smaller and thinner than that of other types of abalone (Japanese abalone (黒鮑), disk abalone (雌貝鮑), ezo abalone (蝦夷鮑), giant abalone (真高鮑)). Tokobushi abalone is generally not eaten raw, but rather boiled or steamed. Many sushi chefs say that when heated, the taste is richer than that of abalone.

Tokobushi abalone is sold in the market throughout the year, but in many fishing areas, winter is a closed season. While abalone, which is suitable for steamed shellfish, is in season in summer, Tokobushi abalone, on the contrary, is in season in winter and is used as an alternative to abalone for steamed shellfish in winter.

However, because the catch of Tokobushi abalone is decreasing and its price is high like that of abalone, few sushi restaurants use it. Compared to abalone, Tokobushi abalone is softer and does not get tough when heated, so it is boiled in soy sauce and sake to make Tsumami.

We hope this information will be helpful.

Revision date: April 14, 2023

Share this article

What is Golden threadfin bream (Itoyoridai) sushi?

a photo of Golden threadfin bream (Itoyoridai)
Golden threadfin bream is one of the most important species of commercial fisheries in the East China Sea and northern South China Sea.

What is Golden threadfin bream (Itoyoridai)?

Golden threadfin bream (Itoyoridai) is distributed in Chiba Prefecture and southward except Ryukyu Islands, Korean Peninsula, East China Sea, South China Sea, Philippines, and Northern Australia. It has a low, slender body shape, is generally reddish yellow with 6~8 longitudinal yellow stripes on the body, and the upper lobe of the tail fin is elongated in a thread-like shape. It lives on muddy bottoms at depths of 40~100m and are 40~50cm long. Its season is from fall to winter.

The yellow stripes on its body are beautiful and do not fade after being caught, so it is often used for celebrations and festivals. It can be found in the market all year round, but the catch is not so large that it is in short supply. It is more highly prized in the Kansai region than in the Kanto region, where it is treated as a luxury fish. It is not a member of the bream family and used to be called Golden threadfin (Itoyori) without bream.

A closely related species, yellowbelly threadfin bream, is very similar, but the Toyosu market does not distinguish between the two and distributes them under the name Itoyori. There is almost no difference in taste. If anything, Yellowbelly threadfin bream (Nemipterus bathybius Snyder, 1911) is a bit softer than Golden threadfin bream (Nemipterus virgatus (Houttuyn, 1782)). Itoyori surimi is used to make Kamaboko (fish cake). It is one of the most important species of commercial fisheries.

What does Golden threadfin bream (Itoyoridai) sushi taste like?

a photo of Itoyoridai nigiri sushi
Golden threadfin bream (Itoyoridai) can definitely be eaten as sashimi, kobujime nigiri, sujime nigiri, or steamed with sake.

Golden threadfin bream (Itoyoridai) is used widely in French and Italian cuisine because it has a light, natural flavor and does not shrink when heated. However, it has high water content, so its flesh is a bit softer when made into sashimi.

Golden threadfin bream has umami not only in its meat but also in its skin, so immersed it in boiling water quickly to retain its umami flavor and give it a beautiful appearance.

And then Kobujime makes nigiri sushi with a mild and elegant flavor. The fat between the skin and the flesh contains umami, so it is sometimes seared to give it a savory aroma.

We hope this information will be helpful.

Revision date: April 13, 2023

Share this article

What is Red cornetfish (Akayagara) sushi?

a photo of Aka-yagara
Red cornetfish (Akayagara) was one of the underutilized fish, but will soon be promoted to a luxury fish.

What is Red cornetfish (Akayagara)?

Red cornetfish (Akayagara) is distributed mainly in warm seas around the world, from the seas around Japan south of central Honshu to the Indian, Pacific, and Atlantic Oceans. It inhabits depths shallower than 200 meters. They swim in small groups in rock and coral reefs’ upper layers. Adults are reddish brown, with each fin and belly side slightly paler and sticky without scales. The maximum length of the body is up to 2 m, one-third of which is the head, and the area from the tip of the mouth to the eye is long and tubular.

What does Red cornetfish (Akayagara) sushi taste like?

a photo of Aka-yagara sushi
If you find red cornetfish (Akayagara) at a sushi restaurant, you must try it.

Only Red cornetfish (Fistularia petimba Lacepède, 1803) and Bluespotted cornetfish (Fistularia commersonii Rüppell, 1838) are edible in the waters around Japan. Red cornetfish is more frequently caught. Despite its odd appearance, Red cornetfish is known as a tasty fish and is in season in the summer when few fish are in season.

The taste is mild and light, the meat is firmer than many other white-fleshed fish. It does not become hard even after being heated and is delicious even when steamed. It is so refined and flavorful that it is served as sashimi at Ryotei (Japanese-style restaurants), and is naturally delicious as nigiri sushi. Considering the yield rate, it can be said to be a super-premium fish.

We hope this information will be helpful.

Revision date: April 12, 2023

Share this article

Copy Protected by Chetan's WP-Copyprotect.