On Saturday, October 31, 2026, Sushi Toka (鮨 刻香), a sushi restaurant that uses mold aging, opens in Kitashinchi, Osaka.
Under the concept "A story of tuna and time in every piece of sushi," the restaurant is a collaboration between パパチェル, a mold-aging researcher, and Mr. Taniguchi, a sushi chef from Kyoto Saeki (京都さえき). They focus on aging fish, starting with tuna, and turn the changes in aroma and flavor that come with time into an experience in a single piece of sushi.
Taking an approach different from ordinary sushi, Sushi Toka explores new appeals of fish and the possibilities of aging. From Kitashinchi in Osaka, it offers a new way to enjoy sushi.

"Tuna Gets Better With Time": What Aging Brings Out in Fish
Sushi Toka values the potential of the fish itself and the changes in flavor that aging creates.
Depending on the conditions and length of aging, the aroma, texture, and sense of umami in fish change. The restaurant takes a distinctive approach, mold aging, to explore the appeal of fish from many angles. At the center of it is mold-aged tuna.
It also pays attention to the differences in flavor that come from comparing fish aged for different lengths of time. By combining research into the condition of the ingredients with the skill of a sushi chef, the restaurant aims to serve sushi in which every piece shows a different character.
Managing temperature, humidity, time, and other factors carefully, and working with the individual character that aging brings out in each fish, is the foundation of sushi-making at Sushi Toka.

A Mold-Aging Researcher and a Sushi Chef Join Forces
At Sushi Toka, パパチェル, a mold-aging researcher, and Mr. Taniguchi, a sushi chef from Kyoto Saeki (京都さえき), combine mold-aging techniques with the sensibility of a sushi chef.
The research into aging reveals how fish changes, and the chef's skill turns that ingredient into a single piece of sushi. By bringing their knowledge together, the two aim to draw out new appeals of aged fish.
The goal is not simply to offer an unusual technique, but to explore the relationship between fish and time and to expand the possibilities of sushi.
"Let the tuna rest. Draw out the umami."
Guided by this idea, Sushi Toka offers a dining experience of its own.

Restaurant Information
- Name: Sushi Toka (鮨 刻香 / SUSHI TOKA)
- Opening date: Saturday, October 31, 2026
- Address: YAMANA K2 Building, 3F, 1-7-4 Sonezaki-shinchi, Kita Ward, Osaka City, Osaka Prefecture
- Hours:
- Monday to Friday: 6:00 PM to 8:15 PM / 8:45 PM to 11:00 PM
- Saturday: 5:00 PM to 7:15 PM / 7:45 PM to 10:00 PM
- Closed: Sundays
- Seats: 8 counter seats
- Average spend per guest: ¥20,000
- Reservations: TableCheck reservation page
- Official Instagram: https://www.instagram.com/sushi_toka/
Concept
A story of tuna and time in every piece of sushi.
Let the tuna rest. Draw out the umami.
Sushi Toka explores the possibilities of fish and time, with a mold-aging researcher and a sushi chef working side by side. Through a single piece of sushi, it delivers the new flavors that aging creates.