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Koga Seicha Honpo

古賀製茶本舗

Founded in 1819 in Yame, Fukuoka, Koga Seicha Honpo is a long-running Yame tea maker producing and selling Yame tea through wholesale, retail, and mail order.

Brand story

Koga Seicha Honpo traces its roots to Bunsei 2 (1819) and presents itself as a Yame tea specialist built on careful leaf selection, in-house roasting and processing, and a mix of inherited craft with modern equipment. Its official materials emphasize Yame's mountain terroir, more than 200 years of tea-making continuity, and international-facing quality management backed by Organic JAS, kosher, and HACCP certifications.

Brand Facts

Japanese name: 古賀製茶本舗
Founded: 1819
Headquarters: Yame, Fukuoka
Origin regions: Yame
Certifications: JAS Organic, Kosher Certified, HACCP Certified
Official site: www.koganoyamecha.co.jp
Ships to: Japan
Price/gram range: ¥4–¥11/g
Blends tracked: 6

Origin regionsYame

CertificationsJAS OrganicKosher CertifiedHACCP Certified

Blend Lineup

6 blends

Where to Buy Koga Seicha Honpo in Japan

Official stores and authorized retailers across Japan.

Headquarters Official Store Authorized Retailer

Yame, Fukuoka

Frequently Asked Questions

How long has Koga Seicha Honpo been producing matcha?: Koga Seicha Honpo was founded in 1819, making it over 200 years old. It dates to the Edo or Meiji era of Japanese tea production, based in Yame, Fukuoka.
Where is Koga Seicha Honpo matcha grown?: Koga Seicha Honpo sources its matcha from Yame in Fukuoka prefecture, one of Japan's recognized matcha-producing regions.
How many matcha products does Koga Seicha Honpo offer?: Koga Seicha Honpo currently offers 6 matcha blends. The lineup ranges from Gyokuro Matcha-iri Tea Bag 5g x 12p to One-Cup Matcha-iri Genmaicha Tea Bag 2.5g x 20p, covering different preparation styles and price points.
Why is Koga Seicha Honpo matcha more expensive?: Koga Seicha Honpo matcha ranges from ¥4 to ¥11 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 Koga Seicha Honpo's 207-year heritage.
Where does Koga Seicha Honpo ship to?: Koga Seicha Honpo ships to: Japan. Availability may vary — check their official site for current shipping options.
Where can I buy Koga Seicha Honpo matcha in Japan?: Koga Seicha Honpo has 2 retail locations in Japan, including 株式会社古賀製茶本舗 in Yame.
Is Koga Seicha Honpo matcha organic?: Yes, Koga Seicha Honpo holds organic certification. They also carry: Kosher Certified, HACCP Certified. These certifications are verified through our editorial review process.

Sources

Sources (3)

Koga Seicha Honpo Company

Accessed Mar 27, 2026Confidence: 98%

Supports: Founded in 1819; address in Yame, Fukuoka; business scope; Organic JAS, kosher, and HACCP certifications.

Koga Seicha Honpo About

Accessed Mar 27, 2026Confidence: 96%

Supports: Brand history, Yame focus, in-house roasting/process philosophy, and certification narrative.

Koga Seicha Honpo Official Shop Search

Accessed Mar 27, 2026Confidence: 94%

Supports: Official webshop search for matcha returns six current matcha-related products used for this brand update.

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Frequently Asked Questions

How long has Koga Seicha Honpo been producing matcha?

Koga Seicha Honpo was founded in 1819, making it over 200 years old. It dates to the Edo or Meiji era of Japanese tea production, based in Yame, Fukuoka.

Where is Koga Seicha Honpo matcha grown?

Koga Seicha Honpo sources its matcha from Yame in Fukuoka prefecture, one of Japan's recognized matcha-producing regions.

How many matcha products does Koga Seicha Honpo offer?

Koga Seicha Honpo currently offers 6 matcha blends. The lineup ranges from Gyokuro Matcha-iri Tea Bag 5g x 12p to One-Cup Matcha-iri Genmaicha Tea Bag 2.5g x 20p, covering different preparation styles and price points.

Why is Koga Seicha Honpo matcha more expensive?

Koga Seicha Honpo matcha ranges from ¥4 to ¥11 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 Koga Seicha Honpo's 207-year heritage.

Where does Koga Seicha Honpo ship to?

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

Where can I buy Koga Seicha Honpo matcha in Japan?

Koga Seicha Honpo has 2 retail locations in Japan, including 株式会社古賀製茶本舗 in Yame.

Is Koga Seicha Honpo matcha organic?

Yes, Koga Seicha Honpo holds organic certification. They also carry: Kosher Certified, HACCP Certified. These certifications are verified through our editorial review process.

Sources

Sources (3)

Koga Seicha Honpo Company

Accessed Mar 27, 2026Confidence: 98%

Supports: Founded in 1819; address in Yame, Fukuoka; business scope; Organic JAS, kosher, and HACCP certifications.

Koga Seicha Honpo About

Accessed Mar 27, 2026Confidence: 96%

Supports: Brand history, Yame focus, in-house roasting/process philosophy, and certification narrative.

Koga Seicha Honpo Official Shop Search

Accessed Mar 27, 2026Confidence: 94%

Supports: Official webshop search for matcha returns six current matcha-related products used for this brand update.