Marukyu Koyamaen: Japan's Most Celebrated Matcha House

Tealife did not begin as a matcha company. When I started, the focus was on loose leaf Japanese tea. Sencha, gyokuro, the cultivar-driven teas that I had fallen in love with through years of study and sourcing. Matcha was not part of the plan because the short shelf life was tricky to handle.

Then I tried Unkaku.

A single bowl of Marukyu Koyamaen's Unkaku matcha changed the direction of what Tealife would become. The softness of it. The sweet aroma that arrived before the first sip. The way it coated the palate without any bitterness, just depth and warmth. I had obviously tasted matcha before, but the Unkaku struck something in me. I reached out to Marukyu Koyamaen and began the process of becoming an Authorized Wholesale Retailer.

That was seven years ago. Tealife has now been part of the Marukyu Koyamaen story for seven of its more than 330 years. That is a fraction so small it is almost funny to say out loud. But it is also a privilege I do not take lightly.

This article is my attempt to explain why.

Before you open a single tin of their matcha, the name itself tells you something. Marukyu Koyamaen combines the ensō circle of Zen Buddhist iconography, a symbol deeply embedded in the tea ceremony tradition, with the name of the founding Koyama family.

But the company did not choose the name Marukyu for themselves. For most of their history they traded as the Koyama Motojiro store. At tea ceremonies across Japan, practitioners began referring to the tea simply as Marukyu, because that was the mark on the tin. By the time the company officially changed its name in 1995, the market had been calling them Marukyu for decades. The name earned itself.¹

Marukyu Koyamaen was founded in the Genroku era, between 1688 and 1704, when the founder Koyama Kyujiro began cultivating and processing tea in the Ogura neighborhood of Uji city, Kyoto Prefecture.²

Ogura is not an incidental address. It sits on the western bank of the Uji River, on alluvial soil that drains well despite heavy rainfall, with river mist rising from the water that protects new shoots from frost and moderates the temperature swings that shape a tea leaf's character. These are the conditions that made Uji the undisputed home of Japan's finest tencha from the medieval period onward. Covered cultivation, the technique that defines premium tencha and matcha, developed in this region from the 16th century and was for a long time restricted by the shogunate to the licensed tea master families of Uji. It was in Ogura, at the workshop of a local tea producer, that gyokuro is said to have been developed in 1835, an innovation so significant it is commemorated by a stone monument in the neighborhood to this day.² Yamamasa Koyamaen, another of Japan's most celebrated matcha houses, shares the same ancestral ground.

Kyujiro founded in this place, in this tradition. Over the generations, the business evolved. Four generations after him, the family began selling as well as making. In the Meiji era, the eighth generation Motojiro codified what would become the company's enduring motto: 品質本位の茶づくり, quality above all in tea making. That motto has guided every decision the company has made since.²

品質本位の茶づくり is usually translated as quality-first tea making, or making tea with quality as the guiding principle. But the phrase deserves a closer look because it is not a marketing slogan. It is an operational commitment that shapes everything Marukyu Koyamaen does.

The quality philosophy shows up in a less obvious way: what they decline to do. When their matcha is used as an ingredient by food manufacturers, the vice president has stated directly that the company checks the taste of every product before allowing their name to appear on it. The line they draw is clear: if the product no longer tastes like Marukyu Koyamaen matcha, they will not license the logo to protect it.³ This applies whether the product is a premium ceremonial tin or an ingredient in a popular consumer food. The quality standard does not vary by application.

I can offer a small personal illustration of what this commitment looks like in practice. Early in Tealife's relationship with Marukyu Koyamaen, a shipment was returned due to a shipping issue. The natural resolution seemed simple: correct the details and resend the same package. Marukyu Koyamaen declined. Once a shipment leaves their hands, they have no control over how it has been stored or handled in transit. They cannot vouch for it. So they replaced every item with fresh stock and sent a new shipment, at no cost to us. The package had not been sitting in a warehouse for months. It had simply been outside their control for a period of time. That was enough.

Marukyu Koyamaen has won first place at Japan's National Tea Competition 22 times and at the Kansai Regional Tea Competition 9 times.⁴

To understand what this means, it helps to understand what the competition actually is. The National Tea Competition is an annual event organized by the national tea producers' federation, open to producers across Japan who submit their best teas for blind evaluation on taste, aroma, color, and appearance. The highest award, the Minister of Agriculture, Forestry and Fisheries Prize, goes to the first-place entry in each category. It is one of the most rigorously judged quality assessments in Japanese agriculture. Winning teas command prices that reflect the title directly: competition-winning matcha is priced at a different level entirely from the rest of a producer's range, because the market recognizes what that designation means. Tenju, Marukyu Koyamaen's pinnacle matcha, is a competition winner. Its price reflects that.

Winning once is significant. Winning 22 times over decades reflects a consistency that goes beyond any individual harvest or any single tea maker's skill. It is institutional quality, built into how the company operates rather than dependent on exceptional circumstances.

There is a detail about their competition history worth noting. For an extended period running up to 1965, and again in both 2012 and 2013, Marukyu Koyamaen's garden masters were appointed to serve as judges at the national and Kansai regional tea competitions. Each time, they voluntarily withdrew their own entries rather than compete while serving as judges.⁴ In Japanese professional culture this is the proper course of action, but doing it consistently over decades, and again when called upon long after, reflects something genuine about how the company carries itself.

Marukyu Koyamaen serves as official supplier to major shrines, temples, and tea ceremony grand master families across Japan.¹ This includes the Urasenke and Omotesenke iemoto families, the two most significant tea ceremony houses in Japan, which between them represent the majority of tea ceremony practitioners in the country.

The tea ceremony connection runs deep in another direction as well. Beyond supplying the major schools, Marukyu Koyamaen produces a category of matcha called 家元御好 (iemoto okonomino matcha), blended specifically according to the taste preferences of individual grand master families. These are not standard products. They are teas produced to a specification set by a specific living master, intended for use in that school's practice and ceremonies. The grand master endorses it as the matcha of their tradition.

This practice reflects something important about how tea ceremony culture actually works. The iemoto system is a transmission of knowledge and taste from master to student across generations. When a grand master endorses a specific matcha, they are embedding their aesthetic judgment into the practice of everyone who studies under them. The tea house that produces that matcha is participating in something larger than a commercial transaction.

Marukyu Koyamaen is primarily known outside Japan for their matcha, but their range extends across the full spectrum of Japanese green tea. Gyokuro from their own Uji gardens, kabusecha, multiple grades of sencha including their competition-winning entries, karigane (stem tea), hojicha, genmaicha, and various teabag formats for everyday drinking. For most of their 330-year history, matcha was one product among many. The global matcha boom has made it their most visible face internationally, but the full range reflects a tea house that understands and makes every style of Japanese green tea with equal seriousness.⁵

Their matcha range in particular spans from accessible everyday grades through to some of the finest ceremonial matcha produced in Japan. The company's own guidance is simple: as you move up the grades, the matcha becomes smoother, richer in umami, and more complex in flavor. As you move down, it becomes fresher, more straightforwardly grassy, and more approachable. There is no wrong answer. The right matcha is the one that matches what you are looking for.⁶

What runs through the entire range, from Aoarashi at the entry point to Tenju at the top, is a house character worth naming. Marukyu Koyamaen matcha tends toward the mild side: mellow, smooth, with umami and natural sweetness leading rather than grassiness or astringency. This is not a compromise or a concession to casual drinkers. It is a deliberate house style, built over generations of supplying tea ceremony schools where koicha, drunk as a thick preparation without dilution, demands matcha that can be consumed at full concentration without bitterness overwhelming the bowl. The mildness is the craft.

Tenju (天授) means heavenly gift, and Marukyu Koyamaen describe it themselves as their most fragrant and noble matcha. It is a National Tea Competition award-winning tea, which means its price reflects that designation directly. The moment you open the tin, before you have done anything else, the room fills with it. The richness of the aroma is immediate and unlike anything. Suitable for both koicha (thick tea) and usucha (thin tea), the color is a vivid green. There is no bitterness. The aroma is rich, sweet, and creamy. The mouthfeel is smooth and round, the umami persistent and deep.

It is the finest matcha I have personally tasted. That is not a claim I make lightly after years of working with Japanese tea. Tenju is what the ceiling looks like.

Unkaku (雲鶴) means cloud crane. In classical Japanese art and poetry, the crane soaring through clouds is an image of grace, elevation, and natural beauty. The name suits the matcha exactly. Unkaku has a soft mouthfeel, a pleasant sweet aroma, and a rich depth that Marukyu Koyamaen recommends brewing slightly thicker than usual to bring out its most elegant character. It is one of their two publicly highlighted representative products, alongside Kinrin, and is frequently requested by customers who know the range well.⁷

It is also the matcha that started Tealife's matcha journey. A bowl of Unkaku was the moment I understood what was possible. It has been with us from the beginning.

Hatsunomori (初の森) is a different kind of product entirely. It is an iemoto okonomi matcha, produced by Marukyu Koyamaen exclusively for the Enshu-ryu tea school, specifically for grand master Kobori Soujitsu of the Fuden-an lineage. The name means first forest. It is not a standard retail product and is not broadly marketed.

It came into the Tealife range because a customer asked for it specifically. We ordered it, tried it, and it stayed. It genuinely surprised me. For something that exists outside the main lineup and carries no competition pedigree, it is delicious in a way that catches you off guard. It has since found an audience well beyond Enshu-ryu practitioners, which tells you something about the quality of what Marukyu Koyamaen produces even for their school-specific commissions. Hatsunomori is the definition of a hidden gem.

A company of 330 years could be forgiven for being conservative. Marukyu Koyamaen is not.

Their research and development work has produced several innovations worth noting. From my perspective as a retailer, one of the most significant is their patented low-caffeine matcha, launched in 2017. The technology uses only water, no chemical solvents, to remove over 80 percent of the caffeine from the tea leaves. The leaves are then freeze-dried and stone-ground in the traditional manner. The result is a matcha that retains approximately 90 percent of its theanine, amino acids, and catechins, including EGCG, while containing only approximately 0.7g of caffeine per 100g compared to the standard 3.2g.⁸

Most commercially decaffeinated teas use chemical solvent processes, typically ethyl acetate, which can strip antioxidants alongside the caffeine and leave a residual aftertaste. Ethyl acetate is often marketed as "naturally decaffeinated" because it occurs in fruit, but it remains a solvent process.⁹ Marukyu Koyamaen's water-only method sidesteps this entirely. Pregnant women, nursing mothers, and people sensitive to caffeine now have an option that does not ask them to trade quality for accessibility. For us at Tealife, this matters: it means more people can experience what real matcha tastes like, without compromise.

They have also developed a cold-water matcha called Suzumo (涼雲) that dissolves and whisks properly in cold water, expanding when and how matcha can be enjoyed. And their ISO 22000 food safety certification, JAS organic certification, Kosher certification, and Halal certification reflect a company actively thinking about how Japanese tea quality standards can reach a global audience without compromise.⁴

Since early 2018, imitation products bearing close copies of Marukyu Koyamaen's packaging and product names have been circulating primarily in China and across East Asia. Grades including Isuzu, Aoarashi, and Wakatake have been targeted. In the early years of the problem, the counterfeits were detectable: the packaging design would be slightly off, the characters imprecise. That is no longer reliably the case. The imitations have evolved to the point where the packaging is, by most accounts, visually indistinguishable from the genuine article. To compound this, sellers of counterfeit products on marketplace platforms have been documented using actual product photography taken from authorized retailers' websites, which constitutes copyright infringement in its own right and removes one of the last visual cues a careful buyer might rely on. The financial damage to Marukyu Koyamaen alone has been estimated at over 300 million yen. In some markets, the proliferation of imitations became severe enough that Uji tea itself began to be mistaken by consumers for a Chinese product.¹⁰

It is difficult to overstate how antithetical this is to everything Marukyu Koyamaen stands for. A company that will not resend a returned shipment because they lost sight of it for a few days is watching its name be attached to products made without any of the care, history, or craft that name is supposed to guarantee. They have pursued legal action in China and coordinated with the Japanese government, JETRO, Kyoto Prefecture, and Uji city to press for enforcement.¹⁰ The work continues.

For consumers purchasing outside Japan, the most reliable protection is straightforward: buy from an Authorized Wholesale Retailer. This is a designation granted by Marukyu Koyamaen specifically to direct trading partners with a registered wholesale account. It cannot be self-declared, and any certificate or document can be copied. The verification method that cannot be faked is a direct inquiry to Marukyu Koyamaen themselves, who will confirm whether a retailer is authorized. Tealife is an Authorized Wholesale Retailer of Marukyu Koyamaen. We encourage anyone who wants to verify that to contact Marukyu Koyamaen directly. Transparency matters more to us than any credential we could display.

We also believe that awareness is the most powerful tool against counterfeiting. These products only exist in the market because people buy them, often without knowing they are not genuine. The more clearly consumers understand what to look for and how to verify, the less viable the counterfeit trade becomes. That is part of why we are writing about this directly, and why we encourage anyone with questions about authenticity to ask us or to contact Marukyu Koyamaen. The fight against counterfeiting is not one company's problem to solve alone.

Tealife has been an Authorized Wholesale Retailer of Marukyu Koyamaen for seven years.

Seven years of 330 is approximately two percent of their history. Put that way it sounds almost absurd, a footnote in a story that was already ancient when Singapore was founded. But that fraction is also a responsibility. We carry, or at least we try to carry, the weight of the tradition and the commitment to quality that every tin represents.

In practice that means this: when Marukyu Koyamaen ships to us, the tea flies. It typically arrives overnight. The moment it lands, it goes into the chiller. We order in small batches several times a month rather than in bulk, because freshness matters more than logistics convenience. The tea stays in the chiller until the day a customer's order goes out, at which point we take it out and ship it immediately. The cold chain exists for a reason, and maintaining it is the least we can do for a tea that has traveled this far and carries this much behind it.

The tea does the rest.