Yamamasa Koyamaen

Yamamasa Koyamaen is a heritage cultivator and producer of authentic Japanese matcha based in the historic region of Uji, Japan. They represent a standard of craftsmanship that has been refined over generations. Instead of operating a standard factory, they manage their facilities more like an artisan studio. Driven by the uncompromising motto "Taste First," their master blenders trust long-accumulated wisdom and their own sharp sensory expertise of scent, tint, flavor, and touch over machinery or automated metrics to blend the ideal tea. We are honored to welcome you into this inspiring legacy, a tradition that makes an art out of every serving and has charmed over a thousand tea shops.

A Century-Spanning Legacy in Uji

The journey of Yamamasa Koyamaen began centuries ago when their ancestors first laid down roots, cultivating and producing tea in the historic region of Ogura, Uji. Across generations, these foundational farming and production skills have been carefully inherited, refined, and advanced.

The archival photograph displayed captures this rich commercial history in motion, showing traditional tea shipping containers being loaded for distribution. Having officially established their specialized wholesale operations in 1861, Yamamasa Koyamaen now marks more than 160 years in business, a monumental milestone built on continuous dedication to the leaf.

These archival photographs capture Yamamasa Koyamaen’s packing and stone-milling rooms during the mid-20th century.

  • USUBA (臼場):The Stone-Milling Room

    Step back in time to the heart of the traditional milling room, where finished tencha leaves are transformed into fine matcha powder.

  • The Tea Sorting and Packing Room

    This photograph shows the lively wholesale workroom where tea is portioned into smaller packages and packed before being shipped throughout Japan. It captures the final stage of the production process, where the tea is prepared as a finished product.

The Meaning Behind "Taste First"

At the heart of the brand's identity is an uncompromising truth: their history is a pursuit of taste above all else. For people around the world who truly appreciate authentic matcha, the company strictly upholds the creed of "Taste First."

While Yamamasa Koyamaen's roots are steeped in generations of traditional cultivation and blending, their vision for the future is remarkably open. They recognize that the charm of matcha is multifaceted. Whether it is whisked in a traditional ceremony, baked into sweets, or mixed into modern lattes, every approach is a valid way to experience it.

However, their mission is to preserve the authentic 'deliciousness and presence' of Uji matcha. In a market often driven by superficial trends, Yamamasa Koyamaen stands out for its distinct integrity: they refuse to lock exceptional quality behind inaccessible prices for a select few, just as they refuse to mass-produce cheap, low-grade tea to chase passing global trends.

By keeping their entire production process completely integrated and handling everything from the initial cultivation in the fields all the way through to final stone-milling, they successfully deliver genuine premium quality at a completely fair price. To fulfill that promise, they craft specific grades for specific uses, ensuring everyone can experience their matcha at its absolute best.

Recognized by Masters, Cherished Nationwide

This disciplined devotion to quality has earned Yamamasa Koyamaen immense prestige within Japan's most traditional tea circles. Through generations of selecting and promoting superior tea cultivars, they have been granted eighteen official tea names (Cha-mei) directly by the heads of major historical tea ceremony schools.

Today, they manufacture and wholesale an exceptional catalog of premium teas centered on matcha, as well as high-grade gyokuro and sencha. Their craft is trusted by over a thousand tea retailers and tea-utensil shops nationwide. Furthermore, their teas are sought out by high-end department stores, domestic and overseas trading companies, luxury hotels and inns, long-established restaurants, modern cafés, and both traditional Japanese and Western confectioners.

The Science of Shading and Cultivation

The exceptional profile of higher-grade matcha is instantly recognizable: a refined aroma, a remarkably round and smooth taste, deep umami sweetness, and a brilliant green hue. This caliber of quality demands uncompromising agricultural care and significant investment, particularly in the meticulous practice of pre-harvest shading.

These distinctive flavor elements are built upon precise agricultural science:

  • Nurturing Umami

    A matcha's rich sweetness comes chiefly from theanine, an amino acid that thrives when tea trees receive abundant, high-quality soil nutrients.

  • Sunlight Regulation

    By carefully blocking sunlight before the harvest, farmers prevent theanine from converting into bitter catechins. This deliberate step yields a leaf bursting with umami while significantly reducing bitterness and astringency.

  • The Shaded Aroma

    When shading is executed at the precise moment and sustained for the perfect duration, it develops the signature, deeply prized "shaded aroma" distinct to premium matcha.

Watch: A look behind the scenes at the Yamamasa Koyamaen production process.

Simple is Best: Recommended Use for Each Matcha Grade

To help you get the most out of each bowl, Yamamasa Koyamaen recommends selecting your matcha grade based on its intended preparation. When crafting drinks or desserts, the golden rule of matcha is simple: always match the grade to the specific job. Because authentic matcha is an incredibly delicate ingredient, heavy processing, high heat, or overly complex flavor combinations can easily dull its natural aroma, rich umami, and vivid green color. To enjoy the true character of your tea, let your recipe dictate your choice of blend.

Matcha for Tea Ceremony & Everyday Drinking For Drinks and Fresh Creations

For Drinks and Fresh Creations

The flavor of matcha varies beautifully by grade and individual blend. When preparing drinks or fresh and minimally heated creations, choose your matcha according to the flavor, aroma, and intensity you wish to achieve.

For a Refined, Aromatic Profile

Choose a higher-grade drinking matcha traditionally suited to Japanese tea ceremony settings, formal tea gatherings, and serving honored guests. These blends offer a refined aroma, smooth texture, rich umami, gentle sweetness, and an elegant finish.

For a Robust, Full-Bodied Profile

Choose an approachable everyday drinking grade if you prefer a more pronounced bitterness, astringency, and stronger tea character. These blends retain a clear matcha presence when combined with milk or other ingredients.

Recommended Applications

These drinking grades are ideal for traditionally whisked matcha, lattes, ice cream, creams, sauces, chocolates, jellies, and puddings. They may also be sprinkled directly over finished Japanese or Western dishes and confectionery.

Food & Confectionery Grade For Heating and Mixing Applications

When high-grade matcha is exposed to oven heat or thoroughly mixed into doughs and batters, its delicate, highly volatile aromas inevitably become muted, and its beautiful green color is also difficult to preserve.

Choosing the Right Grade for the Application

For baked goods such as cookies, pound cakes, and breads, as well as confectionery products that involve heating or intensive mixing, such as matcha bean paste and yokan, it is not always necessary to use high-grade matcha intended for usucha or koicha.

For these applications, a robust everyday drinking grade or a matcha specifically designed for confectionery use is often the more suitable choice.

Why Confectionery-Grade Matcha Works Well

Compared with high-grade matcha, confectionery-grade matcha generally has more pronounced bitterness, astringency, and a stronger tea character. As a result, its matcha flavor is less likely to be overwhelmed when mixed into doughs or batters or exposed to high temperatures, allowing the finished product to retain a clear and recognizable tea flavor.

Yamamasa Koyamaen’s Approach to Matcha Sweets

Yamamasa Koyamaen is a matcha brand whose high-grade drinking matcha is enjoyed around the world.

When using high-grade matcha in sweets, we strongly recommend choosing fresh or minimally heated confectionery rather than baked goods exposed to high temperatures for extended periods. This allows matcha’s natural beauty—its vivid green color, delicate aroma, and mellow flavor—to be expressed more fully.

This official application matrix created by Yamamasa Koyamaen makes it easy to match every grade in their lineup to its perfect culinary use, guiding you seamlessly from delicate whisked drinks to robust baked goods.

All images used in this article are official materials provided by Yamamasa Koyamaen. ©YAMAMASA KOYAMAEN