Enjoy an amazing SUSHI experience on Kozushima , a hidden gem of Tokyo !

• Table of Contents
• Where is Kozushima?
• What is aged fish sushi?
• Popular with customers from overseas! The best SUSHI EXPERIENCE!
• The owners are a couple who love fishing
• Stay at Vacation House FamiliA. Benefits from Aged fish factory too!

Where is Kozushima?

Kozushima is one of the Izu Islands , an isolated island off Tokyo . It is only 45 minutes by plane from Tokyo and is one of the best beaches in Japan with good water quality. Mt.Tenjo is also one of the 100 famous mountains for flowers. The beautiful night sky has been certified as a "Dark Sky Place" and is also known as a world heritage site for starry skies. The island is full of attractive spots such as hot springs and fresh fish, and has a rich nature and unique history and culture that you would never think it was in the same Tokyo.

If you're a gourmet traveler, the food you eat while traveling is one of the most important pleasures!
This time we will be introducing you to a special dish, "Aged Fish Sushi," a local delicacy of Kozushima!
It's worth coming to Kozushima just to eat this sushi!

What is aged fish sushi?

An example of a premium dinner course

Fish that has been properly processed and kept under proper care to enhance its flavor is called "aged fish."
At Kozushima Aged Fish Factory, the owner, who is a certified master of the special bleeding method known as the "Tsumoto Style Ultimate Blood Draining," thoroughly removes the blood from the body of the fish, which causes spoilage, and prepares the fish in the optimal condition for long-term aging to provide aged fish that bring out the fish's natural flavor and umami to the fullest.
There are delicious aged fish that overturn the conventional wisdom that "fresh = delicious."

The maturation period and method vary depending on the species of fish, the season, and individual differences, and there are some fish that are suitable for maturation while others are not, so research is being conducted daily.

*"Tsumoto-style Ultimate Bleeding" is a revolutionary blood-draining method developed by Mr. Tsumoto, who prepares fish daily at Hasegawa Suisan, a wholesaler in Miyazaki Prefecture.

The Kozushima Aged Fish Factory/Sushi Bar is conveniently located just one minute by car from Kozushima's fish market (landing port), meaning that the fish is extremely fresh, can bring them to the shop immidiately and start preparing.

A distinctive feature of Kozushima's fishing industry is that it is all day fishing (for only a few hours), with catches being landed twice a day, in the morning and in the evening.
Therefore, one of the advantages of enjoying aged fish on Kozushima is that all of the fish are kept extremely fresh, unlike anywhere else.

Not only does freshness matter when it comes to sushi made with aged fish, it is also very time-consuming and the presentation and preparation are very special, so there are very few restaurants in Japan where you can eat it, and even if you are lucky enough to come across it at a high-end members-only store in Ginza, it will be quite pricey.

Kozushima has favorable conditions and  an experienced chef, so if you come just to try the sushi made with aged fish, you might be able to enjoy other things to your advantage!

Popular with customers from overseas! The best SUSHI EXPERIENCE!

If you come to Japan, you may be like
"I love fish! definitely want to eat sushi!
But I don't know what kind of fish it is or when it's in season, so I can only order tuna and salmon..."

Have you ever had such an experience?

The most recommended dish at Aged Fish Sushi Bar is the Premium Dinner Course!
From appetizers to 15 types of chef's choice nigiri, seasonal delicacies, and desserts, you can enjoy a full course of exquisite dishes that will impress even the most discerning gourmets.
The chef's choice sushi is made using seasonal local fish caught off Kozushima, prepared to taste its best, and the chef provides commentary on each piece as he makes them.
I'm sure we, Japanese people, even those who live on an island, will be amazed and impressed to encounter delicious fish that we have never even heard of.

Of course, there are many fish that are only found in Japan or that are only caught in this region.
What kind of fish is it? Is it caught in large quantities on the island? Is it tasty in other areas too?

If so, be sure to ask the chef! 
Since you sit at the counter and the restaurant serves food face-to-face, they will be happy to show you photos and even explain things to you in detail, sometimes using a translation app.

Some fish are purchased directly from fishermen, so if you're lucky, you might even get to meet the fisherman who caught the fish. The fishermen's commitment and way of life are really cool!
Having such an opportunity, by eating the food in place of origin, may be one of the best parts of a foodie trip!

In addition, the chef will also pair your sushi with the owner's recommended sake, wine, shochu, and other drinks, ensuring a very satisfying full-course sushi experience!

">

An example of the "Jugoya" aged fish nigiri set

Other options include the lunch set "Aged Fish Chirashi 「Itadaki」", which uses a generous amount of local fish from Kozushima, which is too luxurious to be called chirashi sushi.

For those who are not confident that they can finish a course meal, there is also the dinner set "Jugoya", which is a simple and liter amount of dishes with aged fish nigiri.
In particular, the premium course dishes change with the seasons, so you'll never get bored no matter how many times you come!
*The menu information is current as of February 2025. As research is ongoing, it may be subject to change. Please check the store's website for details.

An example of our premium winter dinner course

The owners are a couple who love fishing

The owner, Mr. Tamaki, is a sushi fanatic with 20 years of experience aging fish, and also a fishing enthusiast.
Apparently the owner himself sometimes goes out to fish, and once he catches one he immediately kills it on board to keep it fresh.

His love for fish has earned him the nickname "Fish Fantasista."
It seems that many customers enjoy fishing, so the conversation is sure to be lively.
It was even featured on a famous fishing YouTube channel.

He also says that there are many rare fish that are not commonly available, or so-called unused fish, that are delicious to eat. One of his commitments is to carefully select such fish species and mature them, and he is also working on reforming the way people eat fish.

The couple moved to Kozushima because they love fish.
They are spreading the word about new ways to enjoy fish and the value of fish.
Enjoy luxurious sushi while chatting with your partner in a stylish restaurant with jazz playing in the background!

[Store Information]

■ Kozushima Aged Fish Factory (seafood sales) / Aged Fish Sushi Bar (restaurant)

■ 21 Kozushima Village , Tokyo 100-0601

■TEL: 04992-7-5916

■WEB: https://kozu-jukuseigyo-kobo.com/

■Closed: Every Thursday

* Reservations are required . We recommend making a reservation at least one day in advance.

Kozushima Aged Fish Factory/Aged Fish Sushi Bar

〒100-0601 Tokyo Kozushima Village Kozushima Village 21, Tokyo Kozushi...

An outstanding dish among Kozushima's local delicacies! This is a restaurant that serves "aged fish sushi," which can only be found on Kozushima, where fresh fish is prepared by experienced chefs. Reservations are required. We recommend making your reservation at least one day in advance.

Stay at Vacation House FamiliA. Benefits from Aged fish factory too!

Vacation House FamiliA is a B&B style accommodation with breakfast included.

We will introduce you to restaurants on the island for lunch and dinner, as we want you to be able to enjoy the island's cuisine at a time that suits you and also have fun interacting with the island's people.

Reservations are required for most dinnertime spots on the island, including the Aged Fish Factory. When you arrive, we will show you a map and show you around the various restaurants, so don't worry if you arrive without a plan.

In addition, Aged Fish Factory and Vacation House FamiliA are affiliated stores.
At Aged fish factory, they offer one complimentary drink to customers who order the premium dinner course.

" Kozushima Aged Fish Sushi" highly praised by guests staying at FamiliA.Some even say that it was far more delicious than a certain famous restaurant that even celebrities have visited.
Most of the customers who come back to FamiliA are also repeat customers of Kozushima Aged Fish Factory!

If you are interested, please come to Kozushima!

To make a reservation for Vacation House FamiliA, click here