Big Boy has launched a new Sweet Potato Mont Blanc Fudge Sundae in Tokyo, available from August 27, 2026.
For travelers exploring dining options in Minato Ward, Big Boy offers a convenient stop with its seasonal dessert menu.
The dessert features a warm brownie topped with cold vanilla ice cream and a fluffy sweet potato paste made from aged “Beni Haruka” sweet potatoes from Ibaraki Prefecture. Prices start at ¥430 (tax included) for the mini size, with the full-sized sundae priced at ¥590 (tax included).
About Big Boy’s Sweet Potato Mont Blanc Fudge Sundae
This dessert highlights the rich sweetness and smooth texture of “Beni Haruka” sweet potatoes, matured for about three months after harvest to maximize flavor. The sundae combines moist brownie, creamy vanilla ice cream, and crunchy crumble topping. A side of Okinawan brown sugar syrup is available to enhance the sweetness with a deep, rich flavor. A mini version is also offered for a lighter treat.
Highlights
- Uses “Beni Haruka” sweet potatoes from Ibaraki, aged for three months to deepen sweetness.
- Features a warm brownie base with vanilla ice cream and sweet potato paste topping.
- Includes optional Okinawan brown sugar syrup to add rich flavor.
- Available in two sizes: regular and mini.
- Offered at 167 Big Boy and Victoria Station locations in Tokyo’s Minato Ward and beyond.
Menu & Event Details
| Item | Details |
|---|---|
| Name | Sweet Potato Mont Blanc Fudge Sundae |
| Menu / items | Sweet Potato Mont Blanc Fudge Sundae, Mini Sweet Potato Mont Blanc Sundae |
| Period | August 27, 2026 – Late October 2026 |
| Location | Minato Ward, Tokyo, Japan |
| Stores | Big Boy and Victoria Station (167 stores) |
| Price | ¥590 (tax included) for regular; ¥430 (tax included) for mini |
| Address | Various locations across Minato Ward, Tokyo |
| Official website | https://www.bigboyjapan.co.jp/ |
Before you buy
- When can I buy the Sweet Potato Mont Blanc Fudge Sundae?
- It will be available from August 27, 2026, through late October 2026.
