Salt manufacturer inheriting 400 years of salt-making history opens pop-up stores in Marunouchi and Nihonbashi Hamacho
Teshio Co., Ltd. is opening three limited-time pop-up stores and cafes in Marunouchi and Hamacho from April 7th to commemorate 400 years of salt making. These stores will offer menus using "Ako no Amashio" salt, salt-infused sweets, and various events. The company's salt-making tradition dates back to the Edo period in the Ako Higashihama salt fields, which is also a Japan Heritage site.
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- 📰 Published: April 2, 2026 at 20:00
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Teshio Co., Ltd. (Headquarters: Shinjuku-ku, Tokyo; President: Megumi Suzuki) will open three limited-time pop-up stores and cafes in Marunouchi and Hamacho starting April 7 (Tuesday), to commemorate 400 years of salt making.
Each store will offer a wide range of appealing features tailored to its characteristics, including menus using "Ako no Amashio" salt, sweets enjoyed with salt, sales of products utilizing salt and minerals, and event hosting.
400 Years of Salt Making
Akoh Kasei Co., Ltd., which manufactures "Ako no Amashio" and other products sold by Teshio Co., Ltd., has its roots in the Ako Higashihama salt fields, where development began in the Edo period. A tombstone of Yahei Okada, a vassal of Mitsumasa Ikeda who moved to Ozaki, Ako in 1626, states, "He made a living by boiling the sea. This became the foundation of salt production in Ako, as well as Ozaki." In 2026, it will be 400 years since then. During the Edo period, Ako's salt making was known nationwide, and the Dutch scholar Shiba Kokan's "Kokan Saiyu Nikki" recorded, "Ako salt is the best in Japan."
In 2019, Ako City was certified as a Japan Heritage site by the Agency for Cultural Affairs under the title "Banshu Ako, the town that produced 'Japan's No. 1 Salt'". The Ako Higashihama salt fields, the original place of business, are also one of the constituent cultural properties.
Store Overview ①
Dates: April 7 (Tue) - April 24 (Fri) Weekdays 11:00-20:00, Weekends and holidays Closed
Location: Marunouchi happ. STORE
Mitsubishi Building 1F, 2-5-1 Marunouchi, Chiyoda-ku, Tokyo

Main Contents:
① Collaboration Deli Menu
Offering lunch deli menus using "Lemon-marinated Chicken Sauce" and "Umami Dashi Salted Kombu"
② Popular bento (Yanmo) will use "Ako no Amashio" during the period
③ Sales of carefully selected products
Ako flat-pan salt, Tenkai no Shio, Tenkai no Mizu Hardness 1000
Epsom water, Epsom salt bath additives
AMAMI TERRACE Shio Koji, Shindofuji Umeboshi, etc.
③ 400 Years of Salt Making panel exhibition
④ Event Hosting
Spice Herb Salt Making Experience (4/8)
Local Sake "Chushingura" tasting & snack pairing (4/15)
Store Overview ②
Dates: April 7 (Tue) - April 8 (Wed) 8:00-22:00
Location: Marunouchi happ. Stand & Gallery
Marunouchi Nichome Building 1F, Nakadori side, 2-5-1 Marunouchi, Chiyoda-ku, Tokyo

Main Contents:
① Decorated as a collaboration shop, positioned as an advertising space for Happ. STORE on the same premises.
Utilized as an advertising store (2 DAYS)
② Using "Ako no Amashio"
All menus use Ako no Amashio
③ 400 Years of Salt Making panel exhibition
Store Overview ③
Dates: April 7 (Tue) - May 6 (Wed) Weekdays 11:30-21:00, Weekends and holidays 10:00-18:00
Location: Hamahouse
3-10-6 Nihonbashi Hamacho, Chuo-ku, Tokyo


Main Contents:
① Collaboration Menu
Offering lunch menus using "Lemon-marinated Chicken Sauce" and "Platinum Satsuki Salmon"
Teshio drinks, sweets eaten with salt
Gacha-gacha lottery with collaboration menus
② In-store panel ("History of Ako no Amashio")
Display of Ako landscape photos in the store
Display and sale of actual Ako Dantsu (rugs) in the store
③ Event Hosting
Salt Making Experience Event (4/12)