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Gashoan

雅正庵

Gashoan (雅正庵) is the sweets and tea retail brand of Oyaizu Seiichi Shoten (株式会社小柳津清一商店), a Shizuoka tea company founded in 1949. The brand sells Shizuoka tea, matcha sweets, and cafe items through its official shops and online store.

Brand story

Created with the mission of making people say 'tea can be this delicious,' Gashoan bridges traditional tea craft and modern confectionery. As the retail and cafe arm of a 70-year-old Shizuoka tea wholesaler, the brand uses shade-grown tencha from mountain river valleys in the Kawane and Honzan regions, ground in-house. Their Tenku no Matcha has gained national recognition, appearing in Furusato Nozei gift sets and a limited-edition Tirol Choco collaboration.

Brand Facts

Japanese name: 雅正庵
Founded: 1949
Headquarters: Suruga-ku, Shizuoka City, Shizuoka
Certifications: JAS Organic
Official site: www.gashoan.com
Ships to: Japan
Price/gram range: ¥11–¥36/g
Blends tracked: 4

CertificationsJAS Organic

Brand Flavor Trends

Average across 3 scored blends. Individual blend scores may vary significantly.

Blend Lineup

4 blends

Where to Buy Gashoan in Japan

Official stores and authorized retailers across Japan.

Headquarters Official Store Authorized Retailer

Shizuoka

Yaizu, Shizuoka

焼津西小川店
Official Store
〒425-0036 静岡県焼津市西小川6丁目5-1

Frequently Asked Questions

When was Gashoan founded?: Gashoan was established in 1949 in Suruga-ku, Shizuoka City, Shizuoka. It is a pre-war era matcha producer with 77 years of history.
Does Gashoan offer single-origin matcha?: Gashoan offers 1 single-origin blend (Kokusan Shizuku), alongside 3 blended products.
What does Gashoan matcha taste like?: Across its lineup, Gashoan matcha tends toward umami (7.0/10) with notable body (7.0/10). Individual blends vary — check each blend's profile page for detailed tasting notes.
Which Gashoan matcha is best for lattes?: Shizuoka Powder is Gashoan's latte-recommended matcha. It is formulated to hold its flavor when mixed with milk or plant-based alternatives.
Why is Gashoan matcha more expensive?: Gashoan matcha ranges from ¥11 to ¥36 per gram, placing it in the premium tier. Higher pricing typically reflects stone-milling, single-origin sourcing, specific cultivar selection, or traditional production methods — and Gashoan's 77-year heritage.
Where does Gashoan ship to?: Gashoan ships to: Japan. Availability may vary — check their official site for current shipping options.
Where can I buy Gashoan matcha in Japan?: Gashoan has 4 retail locations in Japan, including おやいづ製茶本店 in Shizuoka.
Is Gashoan matcha organic?: Yes, Gashoan matcha is certified organic, meaning it is produced without synthetic pesticides or chemical fertilizers.

Sources

Sources (2)

Gashoan Online Shop

Accessed Mar 23, 2026Confidence: 95%

Supports: Brand overview, product range, headquarters address

Oyaizu Seiichi Shoten Corporate Site

Accessed Mar 23, 2026Confidence: 95%

Supports: Founded 1949, Shizuoka tea wholesaler, parent company of Gashoan

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Frequently Asked Questions

When was Gashoan founded?

Gashoan was established in 1949 in Suruga-ku, Shizuoka City, Shizuoka. It is a pre-war era matcha producer with 77 years of history.

Does Gashoan offer single-origin matcha?

Gashoan offers 1 single-origin blend (Kokusan Shizuku), alongside 3 blended products.

What does Gashoan matcha taste like?

Across its lineup, Gashoan matcha tends toward umami (7.0/10) with notable body (7.0/10). Individual blends vary — check each blend's profile page for detailed tasting notes.

Which Gashoan matcha is best for lattes?

Shizuoka Powder is Gashoan's latte-recommended matcha. It is formulated to hold its flavor when mixed with milk or plant-based alternatives.

Why is Gashoan matcha more expensive?

Gashoan matcha ranges from ¥11 to ¥36 per gram, placing it in the premium tier. Higher pricing typically reflects stone-milling, single-origin sourcing, specific cultivar selection, or traditional production methods — and Gashoan's 77-year heritage.

Where does Gashoan ship to?

Gashoan ships to: Japan. Availability may vary — check their official site for current shipping options.

Where can I buy Gashoan matcha in Japan?

Gashoan has 4 retail locations in Japan, including おやいづ製茶本店 in Shizuoka.

Is Gashoan matcha organic?

Yes, Gashoan matcha is certified organic, meaning it is produced without synthetic pesticides or chemical fertilizers.