The absolute signature of Sushi Inomata. Chef Inomata chooses the best tuna from Toyosu and subjects it to a rigorous aging process that breaks down the proteins and concentrates the savory umami. The result is a piece of fish that has a texture similar to high-end butter and a flavor profile that is remarkably deep and slightly funky. It is paired with his signature red-vinegar rice, which provides a strong acidic counterpoint. Reviewers consistently name it as the most profound tuna bite in Japan.
Tips from diners
This is non-negotiable! The aging process creates a flavor that is much more intense than standard 'fresh' sushi. Eat it slowly to appreciate the complex notes—it's almost like a fine cheese or a dry-aged steak.
The traditionally technical highlight of any Edomae meal, refined by Inomata's aging technique. The kohada is seasoned with a precise amount of salt and vinegar and then aged to allow the silver skin to soften and the flavor to deepen. It is a study in acidity and savory balance. Reviewers highlight the incredible texture and the way it wakes up the palate before the richer courses. It is widely cited as one of the best kohada preparations in the city.
Tips from diners
The kohada is the baseline to judge any master. Here, it has a remarkable resilience and a clean, sharp finish. It pairs perfectly with the strong red-vinegar shari.
A favorite from the 'otsumami' (appetizer) section. The fish is flash-smoked over traditional rice straw to create a savory, charred exterior while the center remains cool and rare. It's a technical highlight that showcases the kitchen's ability to balance delicate fish flavors with intense smoke. Reviewers often mention its silky texture and the way it maintained its color and aroma despite the aging and smoking process.
Chef Mitsunori Inomata is a pioneer of the 'aged sushi' movement. Located just outside Tokyo proper in Kawaguchi, his restaurant has become a global pilgrimage site for those seeking the ultimate in umami. Inomata-san ages his fish—particularly white-fleshed varieties and tuna—for significantly longer than traditional Edomae masters, sometimes up to several weeks. It is celebrated for its incredibly soft textures and its status as one of Japan's most provocative and rewarding sushi experiences.
Reservations are effectively impossible for first-timers without a referral or a high-end concierge. They open on the first of the month on Omakase.in and are gone in seconds. Use a luxury concierge or book several months in advance if you're serious about a seat.
The restaurant is very intimate with only 8 counter seats. It's a quiet, serious space designed for a focused dining experience. Smart-casual attire is expected—jackets are recommended for gentlemen. Chef Inomata's presence is commanding but welcoming.
It is located in Kawaguchi, which is just across the border in Saitama but easily accessible from central Tokyo (about 30 minutes by train). Give yourself extra time to find the entrance—it's very discreet and easy to miss from the street.
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