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Oishi Chaen logo

Oishi Chaen

株式会社 大石茶園大石茶園

Oishi Chaen (株式会社 大石茶園, OISHI TEA FACTORY) is a Yame tea manufacturer in Murooka, Yame City, Fukuoka, founded on April 1, 1940. Its representative is Oishi Goji (大石剛司) and its capital is ¥50 million. The company's own history lists these milestones: 1954 Kenji Oishi became head; 1972 renamed Oishi Chaen; 1977 its tea garden won the Minister of Agriculture and Forestry Award; 1991 Ochamura, a direct-sales company, set up; 2008 CCD foreign-matter removal installed on all lines at its head office; 2018 FSSC22000 and JAS Organic. Its site describes it as a wholesale company for corporate clients and says it supplies organic and pesticide-free teas to overseas markets.

Brand Facts

Japanese name
株式会社 大石茶園
Founded
1940
Headquarters
Yame, Fukuoka
Origin regions
Yame
Certifications
JAS Organic
Official site
oishichaen.co.jp
Ships to
Japan, International
Price/gram range
$0.42–$1.00/g
Blends tracked
7
Origin regionsYame
CertificationsJAS Organic

Blend Lineup

7 blends
  • Yame Kirari logo

    Yame Kirari

    CeremonialYameUsuchaLatte

    Lowest in stock: ¥66/g (≈$0.42/g) at O-Cha

  • Yame Okumidori logo

    Yame Okumidori

    CeremonialYameUsuchaKoicha

    Lowest in stock: ¥99/g (≈$0.63/g) at O-Cha

  • Yame Saeakari logo

    Yame Saeakari

    CeremonialYame

    Lowest in stock: ¥66/g (≈$0.42/g) at O-Cha

  • Yame Saemidori logo

    Yame Saemidori

    CeremonialYameUsuchaKoicha
  • Yame Seimei logo

    Yame Seimei

    CeremonialYame
  • Yame Suihou logo

    Yame Suihou

    CeremonialYameUsuchaLatte

    Lowest in stock: ¥83/g (≈$0.52/g) at O-Cha

  • Yame Tsuyuhikari logo

    Yame Tsuyuhikari

    CeremonialYameUsuchaLatte

    Lowest in stock: $1.00/g at Cafe Kobeco

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Where to Buy Oishi Chaen in Japan

Official stores and authorized retailers in Japan.

Headquarters

Yame, Fukuoka

  • 株式会社大石茶園

    Headquarters

    1071 Murooka, Yame, Fukuoka 834-0066, Japan

Frequently Asked Questions

When was Oishi Chaen founded?
Oishi Chaen was founded in 1940, based in Yame, Fukuoka. That is 86 years ago.
Where is Oishi Chaen matcha grown?
The Oishi Chaen teas on this page come from Yame, Fukuoka prefecture.
What tea cultivars does Oishi Chaen use?
Oishi Chaen uses 5 tea cultivars: Kirari 31, Okumidori, Saemidori, Yabukita, Tsuyuhikari. Each contributes different umami, sweetness and color to the blends.
Which Oishi Chaen matcha is best for lattes?
The Oishi Chaen matcha listed for lattes here: Yame Kirari, Yame Suihou, Yame Tsuyuhikari.
How many matcha products does Oishi Chaen offer?
This page lists 7 Oishi Chaen matcha blends.
How much does Oishi Chaen matcha cost?
Oishi Chaen matcha ranges from $0.42 to $1.00 per gram across 7 blends.
Where does Oishi Chaen ship to?
Listed regions: Japan, International. Check Oishi Chaen's official site for your destination.
Is Oishi Chaen matcha organic?
Oishi Chaen lists organic certification. It may not cover every blend; check the pack.

Sources

Sources (4)

Oishi Tea Factory Official Website

Accessed Mar 24, 2026Confidence: 98%

Supports: Established 1940, headquarters Yame Fukuoka, representative Goji Oishi, capital 50M JPY

Oishi Chaen Company Profile

Accessed Mar 22, 2026Confidence: 97%

Supports: Rep: Oishi Goji; Capital ¥50M; Address 福岡県八女市室岡1071

Oishi Chaen Company History

Accessed Mar 22, 2026Confidence: 97%

Supports: Founded April 1 1940; 1954 Kenji Oishi became head; 1972 renamed; 1977 tea garden won the Minister of Agriculture and Forestry Award; 1991 Ochamura; 2008 CCD foreign-matter removal; 2018 FSSC22000 + JAS Organic (scope not stated)

Oishi Chaen Official Site

Accessed Mar 22, 2026Confidence: 95%

Supports: Brand overview

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How does Oishi Chaen compare?

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Brand Facts

Japanese name
株式会社 大石茶園
Founded
1940
Headquarters
Yame, Fukuoka
Origin regions
Yame
Certifications
JAS Organic
Official site
oishichaen.co.jp
Ships to
Japan, International
Price/gram range
$0.42–$1.00/g
Blends tracked
7

Trust & Verification

Method
official_website
Sources used
4 sources
Edited by
Mio TakasugiMio Takasugi
Last change
Apr 3, 2026
How we verify data →

Official brand site

Visit official site

Origin regions

  • YameFukuoka

Price range

$0.42–$1.00/g

per gram across 7 blends