Yamama Masudaen Co., Ltd., based in Omaezaki City, Shizuoka Prefecture, Japan, is a distinguished producer and exporter of premium Japanese green tea. With over seven decades of heritage in tea cultivation and processing, the company is known for integrating traditional tea-making methods with modern manufacturing systems, delivering globally recognized quality across various green tea formats.
Company Overview
Founded in 1947, Yamama Masudaen Co., Ltd. has established itself as a vertically integrated tea company managing every aspect of the value chain—from cultivation and harvesting to processing, packaging, and international distribution. Strategically located in Shizuoka, Japan’s largest tea-producing region, the company benefits from optimal climatic conditions, volcanic soil, and access to expert cultivation traditions that enhance tea quality and flavor complexity.
Core Product Categories
Yamama Masudaen’s portfolio includes a wide variety of loose-leaf and powdered green teas, designed for both consumer retail and OEM/private-label services:
Green Tea:
Sencha
Deep-Steamed Sencha (Fukamushi Sencha)
Matcha (ceremonial and culinary grades)
Roasted Tea:
Houjicha
Blended Tea:
Genmaicha (green tea with roasted brown rice)
Matcha Iri Genmaicha (with added matcha powder)
Tea Bags:
Multiple blends in single and pyramid formats
Organic Green Tea:
Certified JAS Organic green teas, cultivated without synthetic chemicals or pesticides
Each product is available in both bulk and packaged forms for B2B and B2C markets, including private label and white-label options for international clients.
Manufacturing & Production
The company’s state-of-the-art processing plant in Omaezaki includes:
Integrated tea factories with sorting, steaming, drying, and packaging lines
Dedicated matcha grinding units with ceramic stone mills
Strict temperature and humidity-controlled storage facilities
Fully automated tea bagging machinery for precise and hygienic packaging
The manufacturing operation is optimized for both high-volume production and artisanal batches, allowing Yamama Masudaen to meet diverse global market requirements.
JAS Organic Certification (Japan Agricultural Standards)
FSSC 22000 / ISO 22000 Food Safety Management System compliance
HACCP implementation across all production lines
Traceability systems ensuring origin-to-end transparency
Each batch is tested for pesticide residues, heavy metals, and microbial safety to meet export regulations across Asia, North America, and Europe.
Market Reach & Exports
Yamama Masudaen exports its teas to over 20 countries, with key markets including:
United States
Germany
France
Malaysia
Canada
Australia
The company supplies bulk tea to major tea brands, cafes, and gourmet distributors, and also collaborates with health and wellness brands for the development of matcha-based beverages and nutraceutical formulations.
Target Audience & OEM Capabilities
The company targets:
Tea wholesalers and specialty retailers
Private-label and OEM clients
Health food brands and natural product stores
Hospitality and cafe chains
E-commerce tea sellers
Yamama Masudaen offers full-service OEM development, including tea blending, packaging design, labeling, and fulfillment for brands seeking authentic Japanese tea offerings under their own names.
Innovation and Sustainability
Yamama Masudaen is committed to eco-conscious farming and innovation:
Uses organic fertilizers and soil revitalization practices
Implements energy-efficient processing systems
Engages in research collaborations with tea science institutes in Shizuoka
Focuses on low-caffeine teas for health-conscious consumers
Introduced instant matcha and cold brew lines to cater to modern lifestyles
Their R&D team continually refines flavor profiles and develops new formats based on international trends and client feedback.
Digital & Media Engagement
Though not heavily active on mainstream social platforms, Yamama Masudaen maintains a professional web presence, featuring:
Downloadable product catalogs and brochures
Corporate history and manufacturing videos
B2B inquiry portals in both English and Japanese
They also participate regularly in international exhibitions such as Foodex Japan, SIAL, and Natural Products Expo.
Brand Lines
Yamama Masudaen: The master brand for all tea products
Masudaen Organic Series: Certified organic range for premium retail and wellness markets
Yamama Masudaen Co., Ltd. continues to embody the craftsmanship and purity of Japanese tea while expanding its reach to meet the rising global demand for functional, clean-label, and sustainably grown green tea products.
