Kappa Sushi is offering a limited run of its new “Truffle-Scented Rich Mayo” series starting September 3, 2026, across all stores in Japan.
Available nationwide (except some stores under renovation or temporarily closed), this seasonal release is perfect for a quick, flavorful meal while exploring the city.
The series features six items topped with a specially crafted mayo sauce made from white truffle oil and mushroom paste, paired with popular sushi toppings like salmon, shrimp, and duck breast, as well as truffle mayo-dressed fried potatoes.
About the Truffle Mayo Series

The “Truffle-Scented Rich Mayo” sauce combines white truffle oil and mushroom paste, delivering a deep, aromatic flavor enhanced by a touch of black pepper. Each sushi topping offers a unique taste experience: the light richness of salmon, the natural sweetness and texture of shrimp, and the robust flavor of duck breast. A tasting set lets customers enjoy all three varieties in one order. Additionally, fried potatoes served with truffle mayo provide a savory side dish perfect for sushi breaks or pairing with drinks.

Highlights
- Uses a special mayo sauce blending white truffle oil and mushroom paste with black pepper.
- Features three sushi toppings: salmon, shrimp, and duck breast.
- Includes a tasting set with all three sushi types.
- Offers fried potatoes served with truffle mayo as a side.
- Available at all Kappa Sushi stores across Japan starting September 3, 2026.
Menu & Availability Details
| Item | Details |
|---|---|
| Name | Truffle-Scented Rich Mayo Series |
| Menu / items | Salmon with Truffle Mayo (2 pieces), Shrimp with Truffle Mayo (2 pieces), Duck Breast with Truffle Mayo (2 pieces), 3-Variety Truffle Mayo Sushi Tasting (3 pieces), Fried Potatoes with Truffle Mayo, Truffle Mayo Sauce (side) |
| Period | From September 3, 2026 |
| Location | All Kappa Sushi stores in Japan (excluding some under renovation or closed) |
| Price | Salmon, Shrimp, Duck Breast (2 pieces each): ¥190 (tax included); 3-Variety Sushi Tasting (3 pieces): ¥290 (tax included); Fried Potatoes with Truffle Mayo: ¥340 (tax included); Truffle Mayo Sauce (side): ¥60 (tax included) |
| Stores | Kappa Sushi nationwide |
Before you buy
- When can I buy the Truffle-Scented Rich Mayo Series?
- The series will be available at all Kappa Sushi stores starting September 3, 2026.