Hotel Nikko Osaka, located in Osaka's Shinsaibashi district (1-3-3 Nishi-Shinsaibashi, Chuo-ku, Osaka City), is holding an Ibaraki Fair from Tuesday, September 1, through Monday, November 30, 2026, spotlighting specialty products from Ibaraki Prefecture, a region blessed with a rich natural environment and diverse seasonal produce.
During the fair, Tea Lounge "Fountain" and "Lobby Lounge" serve limited-edition sweets and drinks made with Ibaraki-grown chestnuts and dried sweet potato, while French restaurant Les Celebrites hosts a one-day tasting seminar exploring the depth of Ibaraki's chestnuts.
Ibaraki is one of Japan's leading agricultural prefectures. Its chestnuts lead the country in both cultivated area and harvest volume, while its dried sweet potatoes account for roughly 90 percent of Japan's domestic production — both specialties nurtured by the prefecture's mild climate and well-drained volcanic ash soil.
The fair brings out the best of these ingredients with the Premium Mont Blanc and Kuri Hiroi Afternoon Tea Set, both built around the rich flavor of Ibaraki chestnuts, and the Hoshiimo Milk Smoothie, which highlights the natural sweetness of dried sweet potato.
For a deeper dive into the chestnut, the hotel also holds a one-day Sweets & Mini Seminar — Autumn Sweets Tasting Party: Ibaraki's Chestnuts, featuring 笹沼太幸, a Technical Officer in the Local Products Sales Division of Ibaraki Prefecture's Sales Strategy Department, as guest speaker. He shares insights into the prefecture's rich local resources and the history, growing regions, and varietal characteristics of chestnuts and sweet potatoes, along with expert tips for enjoying them. Following the seminar, guests can sample seven kinds of sweets made with chestnuts and other autumn ingredients.
Ibaraki tourism brochures and original goods are also distributed throughout the fair.
Ibaraki Fair Overview
Official website: https://www.hno.co.jp/restaurant/plan/fair-ibaraki.html
*Reservations are not accepted for seats at Tea Lounge "Fountain." Takeout is not available.
*Prices include consumption tax and service charge.
Premium Mont Blanc
Period: September 1 (Tue) to November 30 (Mon), 2026
Venue & hours:
- Tea Lounge "Fountain" (1F): 10:00 AM to 6:30 PM (last order 6:00 PM)
- Lobby Lounge (2F): 11:00 AM to 4:30 PM (last order 4:00 PM)
Price:
- Single serving: ¥2,500
- With blended coffee or tea set: ¥3,800
- With free-flow coffee selection or Ronnefeldt tea selection: ¥4,300
Made generously with chestnut paste and candied chestnuts sourced mainly from Iwama, a district of Kasama City known for chestnut cultivation within Ibaraki Prefecture, this Mont Blanc lets the chestnut's rich flavor and refined sweetness shine.
Kuri Hiroi Afternoon Tea Set
Period: October 1 (Thu) to October 31 (Sat), 2026
Hours: Two 2-hour seatings — 12:00 PM to 2:00 PM or 2:00 PM to 4:00 PM
Venue: Lobby Lounge (2F)
Price: ¥7,500 on weekends and holidays / ¥7,000 on weekdays (tax and service charge included; includes Ronnefeldt tea selection or coffee)
Featuring Mont Blanc, brulee, mousse, and other sweets made with Ibaraki chestnuts, this afternoon tea set incorporates Japanese ingredients such as amazake, brown rice tea, and hojicha for a refined taste that captures the deepening of autumn.
Hoshiimo Milk Smoothie
Period: September 1 (Tue) to October 31 (Sat), 2026
Venue & hours:
- Tea Lounge "Fountain" (1F): 10:00 AM to 6:30 PM (last order 6:00 PM)
- Lobby Lounge (2F): 11:00 AM to 4:30 PM (last order 4:00 PM)
Price: ¥2,100
Made generously with "Kahouji Hoshiimo," the first dried sweet potato brand certified under the "Hoshiimo Oukoku Ibaraki Premium 2024" program. Blended with vanilla ice cream, milk, and Earl Grey, the smoothie drinks like a sweet potato dessert — rich yet refreshingly clean on the finish, with the dried sweet potato's natural flavor at its core.
Sweets & Mini Seminar — Autumn Sweets Tasting Party: Ibaraki's Chestnuts
Date: Thursday, September 24, 2026
Schedule: Check-in from 1:00 PM / Seminar 1:30 PM to 1:50 PM / Tea time from 2:00 PM
Venue: French restaurant Les Celebrites (3F)
Price: ¥6,000 general / ¥5,500 for One Harmony members (One Harmony is a free-to-join loyalty program for Okura Hotels & Resorts, Nikko Hotels International, and Hotel JAL City properties)
Content:
- A mini seminar by 笹沼太幸, Technical Officer, Local Products Sales Division, Sales Strategy Department, Ibaraki Prefecture, on the appeal of chestnuts and sweet potatoes grown in the prefecture, a treasure trove of local ingredients.
- A tea time opening with a Japanese-style chestnut black tea, followed by seven kinds of sweets made with Ibaraki chestnuts, including Mont Blanc, tart, and brulee.
- A gift of fresh Ibaraki chestnuts and other souvenirs.
Reservations: Via the official reservation site
Fair Benefits
Guests who order fair menu items or attend the tasting seminar receive Ibaraki original goods and a dining coupon for Hotel Nikko Tsukuba's restaurant.
