Nigiri sushi should be eaten when the fish is in season!

a photo of Mackerel
Mackerel is now in season.

Each food has its own season. It goes without saying that the taste is at its best at that time of year.

When is this “season”?

Most people would answer that it is the time of year when food can be harvested in abundance. This is certainly true for fruits and vegetables. However, this is not always the case with fish. Fish season refers to “the time when the fish is at its peak of fat content,” which does not necessarily coincide with the time when the food is in abundance.

Then, what determines when fish are in season, is the relationship with the spawning season, which is the most important factor. One to two months prior to spawning, both male and female fish feed frantically. This is the time of year when the fish are fat, fatty, and delicious. This is the fish’s season.

However, when the spawning season arrives, the fish become thin. This is because all the nutrients in the body are absorbed by the testes of the males and the eggs of the females. Especially immediately after spawning, the fish have used up all their energy, and their flesh is in a very shabby state.

In other words, the timing of eating the fish is off by just a few days, and the fish tastes considerably less good than when it is in season.

We think you get the idea by now.

You are bound to order fish out of season due to your lack of knowledge. To avoid wasting your money, you should know the season of typical sushi items.

The seasons of typical fish are as follows.

Spring: Japanese halfbeak (Sayori), Ark shell (Akagai), Red seabream (Tai), Pacific herring (Nishin), Black Rockfish (Mebaru), Firefly Squid (Hotaru ika)

Summer: Japanese conger (Anago), Bonito (Katsuo), Horse mackerel (Aji), Greater amberjack (Kanpachi), Goldstriped amberjack (Hiramasa), Daggertooth pike conger (Hamo), Japanese sea bass (Suzuki), Sea urchin (Uni), Japanese whiting (Kisu), Chicken grunt (Isaki), Common scallop (Hotate)

Autumn: Pacific saury (Sanma), Mackerel (Saba), Gizzard shad (Kohada)

Winter: Bastard halibut (Hirame), Japanese amberjack (Buri), Bluefin tuna (Kuro maguro), Japanese pufferfish (Fugu), Splendid alfonsino (Kinmedai), Golden cuttlefish (Sumi ika)

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Revision date: February 27, 2023


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When does Kinmedai taste the best?

No one is more sensitive to the changing of the seasons than sushi lovers. This must be because the taste of sushi toppings is directly tied to the seasons. There are terms to describe this such as Hashiri (early season), Sakari (in-season) and Nagori (late season), and using these words to understand what state the sushi topping is it allows you to grasp and enjoy the various different flavors. There is nothing that says a sushi topping is less delicious because it has a lower fat content.

For example, everyone wants to get in there and be the first to eat early season toppings. It’s obvious that these would all be toppings with low fat content. But early-season toppings have a liveliness that you can’t find in other foods, and some believe that eating these types of food will give you new vitality.

Once a fish is in peak-season, we eat it as sushi. This is because the fish has grown as it approaches breeding season, gradually gaining more fat, and at this stage in its development it has a richer flavor.

And the ‘holdover’ perhaps means that since the season is about to end, we need to get our fill now. While we may feel a bit sad that the season is ending, we can look forward to it coming around again the next year.

On the other hand, there are sushi toppings that don’t seem to fit into the seasons, although the seasonal dishes are one of the important reasons that Japanese food was registered under UNESCO World Heritage.

Those are deep sea fish such as Largehead hairtail, Japanese bluefish, Pollack and Splendid alfonsino.

Deep sea fish live at least 200 m below the surface of the ocean. For example, Splendid alfonsino lives at a depth of between 100 to 800 m deep, so it would generally be thought of as in-season in the winter when it has the highest fat content. However, except just before and after spawning season, the flavor of the Splendid alfonsino doesn’t change much throughout the year. Therefore, even high-end sushi restaurants always keep it in the topping case and it’s a popular choice.

Therefore, Splendid alfonsino is never actually “in-season”.

Since very little light reaches the deep sea, the water temperature remains more or less constant. In other words, there aren’t really seasonal (temperature) changes. The concept of season may not exist there.

Even so, you can think of it as especially delicious in the winter between December and February, when it has a higher fat content. Otherwise you might start to think of it as a fish that is “in-season” all year round, like salmon, and that just doesn’t feel quite as splendid.

Related contents: What is Kinmedai?

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Revision date: October 28, 2019


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What are fish seasons?

Fish seasons are categorized as the ‘catch season’ and the ‘flavor season’. The ‘catch season’ is the time when lots of fish can be caught and are cheap. Take Japanese Spanish mackerel (Sawara), for example, they approach the coasts during the spring to spawn and this is the peak season. This is the catch season. Once they’re about to spawn and their bodies fatten for winter, we’ve entered the tasting season. However, these seasons differ depending on the region, and may be longer or even happen twice a year.

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Revision date: September 4, 2019


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Can’t-miss Tokyo sushi toppings (Meji Maguro)

Meji Maguro (AKA: Meji) caught in fixed net fishing is one type of sushi topping that you really should try. Meji is the larval fish of Pacific bluefin tuna, made and served at expensive restaurants, but not usually available as Edo-style sushi. Its fat is lighter and it doesn’t have the impact that fatty tuna has. Efforts are put into seasoning to avoid this. Using a pinch of ginger, Japanese basil or onion between the topping and rice, along with the wasabi, really brings out the fresh flavor of the young fish as well as the sweetness of this fatty part.

Related contents: TYPES OF TUNA

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Revision date: March 26, 2018


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