Koicha vs Usucha: The Full Breakdown of Matcha's Two Preparations (Including What Sen no Rikyū Actually Valued More)

Koicha (thick tea) and usucha (thin tea) are two methods of preparing the same matcha powder, but they produce completely different experiences. Koicha uses roughly twice the matcha and half the water of usucha, making it four to five times more concentrated. Beyond the thickness, the preparation technique, tea grade requirements, cultural history, and food pairings all differ significantly. And Sen-no-Rikyu, the master who defined the Japanese tea ceremony, called usucha the "true tea," a position that surprises most people who assume koicha holds that title.

Usucha uses approximately 2 grams of matcha powder with 60 to 70 ml of water. Koicha uses about 4 grams with only 30 ml. The result is not just a stronger tea but a fundamentally different substance. Usucha flows smoothly. Koicha moves slowly, dense and syrupy.

Yuki reaches for specific analogies because the numbers alone do not capture the experience. Koicha is espresso to usucha's coffee. It is melted dark chocolate to usucha's hot cocoa. The concentration is so intense that he describes it as feeling like a grenade in the mouth.

For anyone who has only tried usucha and thought that was thick, koicha makes it clear how much further matcha can go. The entire taste profile shifts: umami, astringency, bitterness, and flavor depth all intensify simultaneously, and hidden notes that do not register in usucha become clearly perceptible.

The preparation technique differs fundamentally, and the role of bubbles is at the center of that difference.

For usucha, the chasen is whisked vigorously to create a frothy foam on the surface. This foam is not just aesthetic. The air introduced by whisking softens the impact of the matcha, muting astringency and making the tea milder and easier to drink. This is one reason usucha is more approachable for most people.

For koicha, bubbles are actively avoided. The chasen is used to knead the paste rather than whisk it, using the sides of the prongs against the matcha in a slow, folding motion. The goal is a completely smooth, bubble-free surface. Any air introduced would dilute the concentration and interrupt the direct connection between the matcha and the palate. Koicha is designed to be experienced in its purest, most unmediated form.

Both preparations use matcha from tencha leaves, which are shaded green tea leaves. But koicha demands a significantly higher grade.

Because koicha is so concentrated, any bitterness or astringency present in the tea is fully exposed. There is no foam and no dilution to soften its impact. Even a small amount of astringency that would be manageable in usucha becomes prominent and difficult in koicha.

A practical naming guide exists: matcha names ending in "mukashi" are generally considered more suitable for koicha, while those ending in "shiro" tend toward usucha.

Examples of koicha-suitable matchas include Ummon-no-Mukashi by Ippodo and Senjin-no-Mukashi by Yamamasa Koyamaen. Examples of usucha-suitable matchas include Chigi-no-Shiro by Marukyu Koyamaen and Ike-no-Shiro by Hoshino Sechaen.

Yuki notes that this is not an absolute rule. He personally enjoys making koicha with a high-quality usucha-grade matcha, accepting the additional astringency as part of the experience. The safest approach is to check the packaging for explicit indication of koicha suitability.

There is also a common belief that koicha uses leaves from older tea trees. The reasoning has biological grounding: older trees develop deeper root systems and grow more slowly, which may produce a smoother, more mellow leaf chemistry. In practice many producers do use older tree leaves for koicha, though Yuki notes he has not found specific studies confirming this relationship for Japanese green tea specifically.

Koicha is the older of the two. When powdered tea was introduced to Japan in the late 12th century by Eisai, it was prepared in a dense, concentrated way, closer to what we now call koicha. The formal distinction between thick tea and thin tea came later.

Historically, concentrated powdered tea was used in Zen monasteries to keep monks alert during long meditation sessions. It was functional and intense. As tea culture spread from monasteries to samurai and then to broader society, the need for a more accessible form emerged.

Koicha remained associated with the elite. It required expensive, high-grade tea in larger quantities. Usucha, using less powder and producing a milder drink, allowed more people to participate in tea culture. As tea production expanded and became widespread, usucha became the common everyday expression. It is also the form that has traveled internationally, now appearing in cafes worldwide in the form of matcha lattes.

Both preparations pair well with Japanese sweets, but the appropriate type of sweet differs.

Koicha is traditionally paired with omogashi, moist wagashi confections such as yokan, daifuku, manju, and kuzumochi. These are sweeter, larger, and heavier in texture. The substantial sweetness and body are needed to balance koicha's intensity and direct astringency.

Usucha is typically paired with higashi, dry sweets such as rakugan (small pressed sugar confections) or light crackers like arare and senbei. These are lighter and less intensely sweet, complementing the milder, foamy character of usucha without overwhelming it.

Yuki notes these are traditional guidelines rather than strict rules.

The video promises a surprising historical perspective, and it delivers. Two classical tea texts associated with Sen-no-Rikyu, the 16th-century master who fundamentally redefined the Japanese tea ceremony, address the relationship between the two preparations.

On tasting both side-by-side with the same matcha: One key observation Yuki makes during the tasting is that the two preparations produce completely different flavor profiles despite using identical matcha powder. Koicha feels ten times more intense than its four-times thickness ratio would suggest. Layers of flavor not perceptible in usucha become clear in koicha. This direct comparison is more convincing than any theoretical description of concentration.

On personally enjoying koicha with usucha-grade matcha: Yuki is transparent that he regularly makes koicha with high-quality usucha-grade matcha rather than always insisting on koicha-grade. The additional astringency it introduces is something he actively enjoys, describing it as awakening the senses. This honest divergence from traditional guidance is useful: it demonstrates that koicha is accessible for experimentation rather than being gated behind expensive koicha-specific products.

On the old tea tree claim: Yuki researches the claim that koicha uses tea from older trees and finds biological reasoning that supports the idea, including deeper root systems and slower growth producing different leaf chemistry. However, he is candid that he has not found specific studies confirming this for Japanese green tea. He explicitly invites viewers who have found such research to share it. This kind of intellectual honesty, acknowledging the limits of available evidence, strengthens the overall credibility of the content.

On Rikyu's preference for usucha: Yuki describes finding the classical texts on this question genuinely striking. The ceremonial structure positions koicha as the climax. Yet the historical record attributed to Rikyu names usucha the truer form. Yuki's interpretation, that this reflects a value placed on universality over exclusivity, is a thoughtful reading that connects Rikyu's philosophy to the actual historical spread of matcha in its usucha form across Japan and eventually the world.