What Is Koicha? How Thick Matcha Is Prepared and Served
Koicha is matcha prepared thick, with a generous dose of powder and very little water. It is mixed slowly rather than whipped into foam, giving you a small, glossy bowl in which the tea's texture and flavour are unusually concentrated.
Koicha is the thick preparation of matcha. A relatively large amount of powder is combined with a small amount of water, then worked slowly with a bamboo whisk until it becomes smooth and glossy.
It is still tea, but the texture can surprise you, because koicha does not pour or foam like the thinner preparation called usucha.
Koicha moves more like a loose cream or glaze, and it concentrates every sweet, savoury, bitter, and aromatic quality in the powder.
Koicha at a glance
- Meaning
- Thick tea
- Tea
- Finely milled matcha
- Texture
- Dense, smooth, and glossy
- Method
- Mixed or kneaded slowly rather than whisked to foam
- Serving
- Small, with practice varying by school and occasion
Koicha and usucha are two preparations of matcha
Koicha is not a separate tea plant or a different milling method, since the name describes how matcha is prepared.
Usucha uses more water relative to the powder and is whisked briskly, usually creating a light body and fine bubbles. Koicha uses much less water, so the whisk meets real resistance.
| Koicha | Usucha | |
|---|---|---|
| Meaning | Thick tea | Thin tea |
| Texture | Dense and coating | Light and fluid |
| Whisk movement | Slow mixing and kneading | Fast back-and-forth whisking |
| Surface | Usually glossy, with little or no foam | Often finished with fine foam |
| Powder choice | Mild, balanced matcha is especially important | A wider range can work |
Calling it “the same powder at four times the density” sounds precise, but it hides two things: ratios vary, and tea selected for koicha is usually chosen because it remains balanced when concentrated.
A pleasant everyday matcha can become sharply bitter or drying in a thick bowl.
Koicha is a preparation, but the powder still decides whether that preparation succeeds.
A practical starting ratio
Recipes differ across producers and tea traditions. If you want a clear home starting point, Ippodo's basic koicha method uses 4 g of sifted matcha, 30 ml of water at 80°C, and 15 seconds of slow mixing.
Ippodo's basic koicha recipe
- Matcha
- 4 g, sifted
- Water
- 30 ml
- Temperature
- 80 C
- Mixing
- 15 seconds, slowly
Those numbers describe one reputable method and should not be presented as a rule followed by every tea school, teacher, or producer.
If your matcha carries its own koicha instructions, begin there.
Sifting matters because a dry clump becomes much harder to disperse once only a spoonful of water surrounds it. Warm the bowl, dry it, sift the powder, then add the measured water.
A bamboo chasen gives you the control to press and fold the mixture without beating air through it.
You can adjust after the first bowl: a little more water makes the texture easier to move and opens the aroma, while less water increases concentration quickly.
Change in small steps because five millilitres is a large shift when the whole recipe contains only thirty.
Why koicha is kneaded rather than foamed
With usucha, the whisk travels rapidly through a larger volume of water and introduces air, but koicha offers too little free liquid for that motion.
A fast whisk tends to leave dry pockets, large bubbles, or a rough paste.
The useful movement is slower: press the tines through the tea, draw the mixture across the base of the bowl, and fold it back until the surface looks even.
The language of “kneading” makes sense once you feel the resistance.
Foam is not the target. A few small bubbles do not ruin the bowl, but a cap of froth can hide uneven mixing underneath.
What you want is a continuous texture with no dry powder and no gritty lumps.
The bowl shape helps, because a broad base gives the whisk room to press and turn while a tall mug traps the chasen and makes the slow folding motion awkward.
You do not need an antique vessel, but you do need enough room to work.
Smoothness matters more than speed. Fifteen seconds may suit a finely sifted powder and familiar hands.
At home, take the time required to make the mixture even rather than stopping because a timer says so.
What koicha tastes and feels like
Koicha puts texture first: it coats the tongue, then releases a concentrated mix of sweetness, savouriness, vegetal aroma, and bitterness.
With a well-suited matcha, the finish can remain long and calm rather than aggressively dry.
Every flaw also becomes louder: stale powder can taste flat or hay-like, astringent matcha can grip the mouth, and poorly dispersed powder feels sandy.
Water that is too hot may make an already forceful bowl harder to enjoy.
Colour helps you notice age and oxidation, but it is not a complete buying test. Fresh matcha is often vivid green, while dull olive or brown tones can signal decline.
Lighting, cultivar, and processing also affect appearance, so do not judge an unopened product from a promotional photograph alone.
Temperature is a flavour control, not a sacred number. The Ippodo recipe uses 80°C.
If a particular powder tastes too sharp there, slightly cooler water may give you a more balanced bowl. If it feels muted, check freshness and dose before assuming hotter water will repair it.
The water itself should taste clean, and you do not need to chase one ideal mineral profile.
If your tap water has a strong chlorine or mineral taste on its own, it will be obvious in such a small, concentrated bowl. The practical guidance in brewing water is enough.
Koicha in tea practice
Koicha has an important place in Japanese chanoyu, particularly in formal tea gatherings, where procedure depends on the school, setting, season, utensils, and form being practised.
A short home recipe can introduce the drink, but it cannot reproduce that whole cultural context.
A shared bowl is one established form: guests receive the bowl in turn and drink from it according to the practice of the occasion, but it is not the only form.
At Urasenke's 2023 New Year gathering, for example, each guest received koicha in an individual bowl.
That example is a useful correction to blanket statements, because tradition contains named variations.
We can describe the drink accurately without pretending that one serving arrangement governs every room.
In a formal chaji, koicha may occupy a central and serious part of the gathering, with sweets served beforehand and usucha appearing later.
At home, you can make a single small bowl simply to understand the texture and flavour, and respect for the tradition does not require inventing ceremony you have not learned.
Choosing matcha for koicha at home
Look for a matcha that the producer explicitly recommends for koicha, or ask the seller whether a particular tea is intended to be prepared thick. That guidance is more useful than relying on the unregulated phrase “ceremonial grade” alone.
A good candidate should have enough sweetness and savoury depth to remain pleasant at high concentration. Price can rise with origin, cultivar, harvest, blending, and producer reputation, but price does not tell you which flavour you will enjoy.
Buy a small amount, check the packing information, and use it while the aroma is lively. Once opened, protect it from air, heat, light, moisture, and strong smells.
Storing matcha matters especially here because koicha gives stale powder nowhere to hide.
Make usucha first if you are new to the tea, since it lets you learn the powder's bitterness, sweetness, and preferred temperature in a more forgiving format.
Then make the thick bowl and compare. The change is dramatic, and that comparison explains koicha better than density language ever could.
Koicha is worth making when you want to meet a matcha directly, with little water, no milk, no syrup, and usually no foam to soften the encounter.
What remains is a small serving in which the leaf, the water, and your mixing are all plainly visible.