KADOMASU in Asakusa has introduced THE SQUARE BURGER, an A5 Wagyu burger served between square slices of Japanese milk bread.
The shop stands in Asakusa Nishisando Shopping Street, west of Sensoji Temple. International travelers make up more than 80 percent of its customers, and the burger has attracted diners from around the world.
THE SQUARE BURGER is available in-store at KADOMASU. The menu combines A5 Japanese black Wagyu, custom bread made with a long-established Asakusa bakery, a vegetable-based craft sauce, cheddar cheese, and wasabi.
About THE SQUARE BURGER
A square Wagyu patty
THE SQUARE BURGER uses a square A5 Wagyu patty sized to match the custom shokupan. The release does not specify a price.
Butter-toasted shokupan
KADOMASU toasts the special bread in plenty of butter, giving the outside a crisp, savory finish while keeping the inside soft. The release does not specify a price.
Fresh bread from Terasawa
Masahiko Terasawa, the bakery’s third-generation owner, delivers the custom bread to KADOMASU each morning. The release does not specify a price.
Matcha beer pairing
A matcha beer pairing is also popular alongside THE SQUARE BURGER at KADOMASU. The release does not specify a price.
The burger was developed as a distinctly Asakusa-style take on a globally familiar dish. Its square shape, Japanese ingredients, and four-piece serving style bring together local craftsmanship and a clean, easy-to-eat presentation.
Highlights
- A5 Japanese black Wagyu is selected according to the quality of each batch rather than being restricted to one production area.
- The custom shokupan is made with 100 percent domestic wheat and plenty of golden sesame.
- The bread is toasted in butter on a hot plate for a crisp surface and soft center.
- The vegetable sauce is based on an uncooked vegetable sauce from a Tokyo sauce maker established in 1923.
- The finished burger is cut into four pieces and served with wasabi on Japanese tableware.
- A matcha beer pairing is also popular with customers.
Menu & Store Details
| Item | Details |
|---|---|
| Name | KADOMASU – THE SQUARE BURGER |
| Menu / items | THE SQUARE BURGER; SQUARE CHEESEBURGER; matcha beer pairing |
| Release date | May 2026 for the current official menu format |
| Location | Asakusa Nishisando Shopping Street, Asakusa, Tokyo |
| Stores | KADOMASU, Asakusa |
| Address | Asakusa Nishisando Shopping Street, 2-7-13 Asakusa, Taito City, Tokyo |
| Price | Not specified in the release |
| Official website | Google Maps |
Before you buy
- Where can I get THE SQUARE BURGER?
- It is available in-store at KADOMASU in Asakusa Nishisando Shopping Street, west of Sensoji Temple.
- How much is THE SQUARE BURGER?
- The release does not specify a price.
The Wagyu patty is paired with cheddar cheese, vegetable sauce, and wasabi rather than a heavy combination of toppings. The sauce adds vegetable flavor, acidity, and aroma, while the wasabi provides a sharper Japanese accent.
The bread was created with Terasawa, an Asakusa bakery founded in 1950. Its sesame-rich shokupan is delivered fresh each morning, allowing the bakery team and KADOMASU staff to fine-tune its moisture and toasting results.
KADOMASU’s concept is summarized by the message “Respect tradition. Create something new.” The burger reflects that idea through its use of A5 Wagyu, local bakery expertise, Tokyo-made sauce, and a presentation designed for travelers discovering Asakusa.
