![[September 30 Is Japanese Chestnut Day] Ibaraki Confectioner Kasho Fugetsu's "Phantom Chestnut" Yokan Comes to Matsuzakaya Ueno](/images/articles/5806453444a7a7c9.jpg)
[September 30 Is Japanese Chestnut Day] Ibaraki Confectioner Kasho Fugetsu's "Phantom Chestnut" Yokan Comes to Matsuzakaya Ueno
Sep 25, 2026 · Ueno
Chestnut Yokan from Ibaraki Arrives in Ueno for Japanese Chestnut Day
To mark Japanese Chestnut Day on September 30, the "Chestnut Yokan" from Kasho Fugetsu, a confectioner in Ibaraki Prefecture, is coming to Matsuzakaya Ueno. The yokan is made with a chestnut listed under Japan's GI (Geographical Indication) system and known for having "only one nut per burr." Rare enough to be called a "phantom chestnut," it is the star of this sweet, now on the shelves of Ueno's long-established department store.
What Is Japanese Chestnut Day?
September 30 is Japanese Chestnut Day. Late September is when Japanese chestnuts come into season. This traditional sweet is being introduced for the day, a chance to enjoy one of autumn's classic flavors.
A GI-Registered Chestnut with "Only One Nut per Burr"
The GI (Geographical Indication) protection system lets the national government register and protect the names of products whose qualities are tied to where they come from, such as the local climate and environment or particular production methods. Kasho Fugetsu's chestnut yokan uses a chestnut registered under this system.
What sets it apart is that there is "only one nut per burr." A chestnut burr usually holds several nuts, so the phrase means these chestnuts grow with just a single nut inside each burr. Between its nationally registered origin and this rarity, it fully earns the name "phantom chestnut."
Yokan is a traditional sweet that lets the flavor of its ingredients come through clearly. Chestnut lovers will want to see what this special chestnut becomes in a bar of yokan.
A Kasho Fugetsu Sweet, Available in Ueno
Kasho Fugetsu is a confectioner based in Ibaraki Prefecture. This appearance is a rare chance to pick up chestnut yokan from a local Ibaraki confectioner in Tokyo, without traveling all the way to Ibaraki.
At Matsuzakaya Ueno, Ueno's Department Store
The yokan is sold at Matsuzakaya Ueno, a department store based in Ueno. It is easy to drop by while shopping or exploring the Ueno and Okachimachi area. If you are looking for an autumn gift, or a seasonal treat for yourself, it is worth considering.
At a Glance
- Product: Chestnut yokan from Kasho Fugetsu (Ibaraki)
- Highlight: Made with a GI-registered chestnut that has "only one nut per burr"
- Occasion: Released for Japanese Chestnut Day on September 30
- Store/Venue: Matsuzakaya Ueno
- Area: Ueno
*For details such as sales period and price, please check Matsuzakaya Ueno's official information.
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