Kasho Fugetsu of Ibaraki Brings "Phantom Chestnut" Yokan to Matsuzakaya Ueno (Sept. 30 Is Japanese Chestnut Day)
Sep 25, 2026 · Ueno
Kasho Fugetsu of Ibaraki Brings "Phantom Chestnut" Yokan to Matsuzakaya Ueno, Timed to Japanese Chestnut Day on September 30
Overview
Kasho Fugetsu, a Japanese confectionery shop from Ibaraki, will sell yokan made with a "phantom chestnut" at Matsuzakaya Ueno. The sale is timed to Japanese Chestnut Day (Wagurinohi) on September 30.
The chestnut has a Geographical Indication (GI) registration from the Japanese government and is said to grow "only one nut per burr." Under the GI protection system, the government protects the names of agricultural, forestry and fishery products and foods whose quality and characteristics come from the region where they are produced. A GI registration is official recognition that a product has qualities unique to its region.
A chestnut burr usually holds several nuts, so a single nut per burr sets this chestnut apart. That is likely why it is called the "phantom chestnut." Kasho Fugetsu has turned these precious chestnuts into yokan.
An Autumn Japanese Sweet for Japanese Chestnut Day
September 30 is Japanese Chestnut Day, and this sale was planned to match it. Chestnuts are one of autumn's signature flavors, and in Japanese confectionery they are a favorite ingredient for evoking the season. Japanese Chestnut Day gives shoppers in Ueno a chance to pick up yokan made with GI-registered chestnuts.
Yokan keeps well and is easy to slice and share. It makes a good treat at home and could also catch the eye of anyone looking for an autumn gift.
An Ibaraki Confectioner Comes to Ueno
The yokan will be sold at Matsuzakaya Ueno, a department store in Ueno. Kasho Fugetsu is normally based in Ibaraki, so this is a chance to buy its sweets in Ueno. Locals will appreciate being able to try them without traveling to Ibaraki. Ueno has plenty of spots for an autumn stroll, including museums and parks, so it's easy to stop by while you're out.
Details such as the sales period and prices have not yet been announced. The phantom-chestnut yokan may be hard to get, so if you want to make sure you get some, check the latest information from Matsuzakaya Ueno before you visit.
Event Information
- Vendor: Kasho Fugetsu (Ibaraki)
- Product: Yokan made with a GI-registered "phantom chestnut" that grows "only one nut per burr"
- Venue: Matsuzakaya Ueno
- Area: Ueno
- Occasion: Sale timed to Japanese Chestnut Day on September 30
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