About Japanese tea
About Koga Seicha
Nestled in the misty mountains of Oku-Yame, at an elevation of 200–300 meters, the tea fields of Yame are renowned for producing Japan's highest quality Gyokuro green tea. The region's unique climate—with morning cools and evenings—creates ideal conditions for cultivating flavorful, aromatic tea leaves.
Koga Seicha continues the tradition of harvesting only the consistently first and second flush teas, leaving the third flush untouched. This selective method enhances both flavor and fragrance. Their Yame tea receives top honors at national tea competitions across Japan.

Craftsmanship That Elevates Flavor and Aroma
At Koga Seicha, seasoned artisans roast tea leaves daily in their own factory. While upholding their 200-year legacy, they also employ modern equipment to optimize quality and efficiency. This blend of time-honored technique and innovation ensures a tea experience rich in umami and aroma—true to the soul of Japanese tea culture.

To bring the finest Yame tea to the world
Koga Seicha maintains strict hygiene and safety protocols. The company is proudly certified with:
- Organic JAS (Japan Agricultural Standards)
- Kosher Certification
- HACCP (Hazard Analysis and Critical Control Points)
These internationally recognized standards ensure that every cup of tea is not only high in quality, but also safe and trustworthy.
Koga Seicha continues to craft premium Yame tea that earns the love and confidence of tea lovers across the globe.