Enjoy one of Japan’s most ancient foods at Katsuo Shokudo in Shibuya


‘It can be hard to explain katsuobushi to people who have never tried it,’ says Mai Nagamatsu, owner and chef of Katsuo Shokudo. ‘They walk in, sit down, and wonder what these things in front of them on the counter are. Some people ask if they are pieces of wood.’
Nagamatsu’s elegant solution is to hold these rock-hard grey-black blocks up next to a model of a fish. ‘They sometimes don’t believe me,’ she smiles. The fish in question is a bonito (aka skipjack), a variety of tuna known as katsuo in Japanese. These fish were highly prized in Edo, with the Tokugawa shoguns being presented annually with hatsugatsuo, the first katsuo caught each year.
While katsuo can also be served raw or seared, the most popular way to consume the fish is as katsuobushi. These delicate pink flakes are used to make dashi stock, the foundation of many Japanese dishes. But they can also be eaten as toppings on everything from noodles to rice to okonomiyaki. Katsuobushi was a key component of Edo’s culinary culture: katsuo was transported to the city from western Japan, and had to be dried and fermented to remain edible after the long journey. The people of Edo took a liking to the mildly aromatic flavour that resulted.
At Katsuo Shokudo, Nagamatsu shaves the katsuobushi flakes directly from the rock-hard blocks on what looks like an upside-down carpenter’s plane. She serves the katsuobushi simply, atop rice, along with miso soup, side dishes, and an egg to crack over the rice if you wish. The flakes feature in every element of this satisfying set meal.
Nagamatsu has come to view katsuobushi as one of Japan’s most enduring culinary traditions. ‘I saw my grandmother preparing katsuobushi with the tool my grandfather gave her when he was still alive. And I learned that pots from thousands of years ago containing katsuo bones had been found in Japan. It made me want to show my generation here – and people from around the world – that katsuobushi is a legacy to be cherished.’






