Close-up of a stone mill grinding matcha, coated in fine bright green powder

How to tell matcha quality: what really makes good matcha

You can recognise good matcha by six things: a vivid green colour, very fine powder, a fine and stable foam, a rounded taste with umami and little bitterness, a clearly stated origin (region, cultivar, harvest and, ideally, the tea farmer) and packaging that keeps out light and air. Labels like "ceremonial grade" hardly help, because the term is neither protected nor standardised. Here's what to look for and how to check matcha yourself at home.

Why "ceremonial grade" says little

"Ceremonial grade" sounds like top quality, but it isn't a protected term and can in principle be printed on any matcha – as German broadcaster ZDFheute has pointed out, for example. That's why we deliberately don't use it and simply call our matcha what it is: high-quality matcha. The following signs tell you far more about quality.

1. Colour: vivid green, not olive

Good matcha has a lively, vivid green. The Kyoto Prefectural Tea Research Institute (Japan) judges matcha on five points: colour, fineness, foam formation, foam colour and taste. For colour, judges look for "sae" – a tone in which the fresh green stands out.

Yellowish, brownish or bluish-black tones point to less shading, older or tougher leaves, or poor storage.

Why is matcha so green? The tea bushes are shaded before harvest, so the leaves produce more chlorophyll, the green leaf pigment. You can see this especially clearly in our Matcha Okumidori: one of the most vivid cultivars, with exceptionally high chlorophyll content. The colour even holds in milk.

2. Fineness: like powder, not sand

High-quality matcha is traditionally ground in stone mills and is extremely fine. A simple test, based on the method used by the Kyoto judges:

Put a small amount of matcha on a sheet of white paper.
Smooth it out with the back of a spoon.
Fine matcha spreads evenly and shows a bright, vivid surface. Coarse matcha looks sandy, breaks up and leaves streaks.

Between your fingers, good matcha feels soft, without any grit.

3. Foam: fine and stable

Whisk your matcha as usual: 3 g sifted, 60 ml of water at 75–80 °C, 15–20 seconds. Good matcha forms a fine, dense foam that holds for a while. Coarse bubbles that collapse quickly suggest a simpler quality. The foam itself should also be a fresh green.

4. Taste: rounded, with umami

Drunk straight, good matcha tastes soft and rounded, with umami (savoury, slightly brothy), natural sweetness and little bitterness. If your matcha tastes only bitter and dry, it's either the preparation (water too hot, too much powder) or the matcha itself.

Important: "good" doesn't mean "the same for everyone". Single-cultivar matchas taste very different:

Saemidori is exceptionally smooth, floral and sweet.
Gokou is layered and dense, with dark chocolate, sweet cream and oceanic minerality.
Asahi is the cultivar of choice for formal tea ceremony.

5. Origin: the more specific, the better

"From Japan" is a start, but it isn't a statement about quality. Check whether these are stated:

the region, for example Wazuka (Kyoto) or Kagoshima;
the cultivar, or whether it's a blend (more in What are matcha cultivars?);
the harvest, for example first harvest;
ideally, the tea farmer.

At Green Room Matcha, every cultivar lists this. Our Yabukita, for example, comes from Takayuki Matsuda's fields in Wazuka, Kyoto – a region that has been producing tea for over 800 years: first harvest, shade-grown, stone-milled. Our Asahi comes from Kenta Hosoi, a fifth-generation tea farmer. Asahi makes up less than 1% of Japan's total tea production.

6. Packaging and freshness

Matcha is sensitive to light, air, heat and moisture. Good matcha comes in a tin that keeps out light and air, with a best-before date. At home, store it airtight, cool, dry and dark – and in the fridge once opened. Matcha that turns olive or brownish over time has lost its freshness.

How to check quality at home

Look: Is the powder vivid green?
Spread: Does it spread finely and evenly on paper?
Whisk: 3 g, 60 ml of water at 75–80 °C, 15–20 seconds. Is the foam fine and stable?
Taste it straight: Is it rounded, with umami and little bitterness?
Read the label: Region, cultivar, harvest, farmer?

Want to compare cultivars directly? Our matcha comparison shows taste, origin and price per cup at a glance. With the MATCHA DUO Umami Bomb you can taste Gokou and Okumidori side by side.

Frequently asked questions

Is "ceremonial grade" a quality seal?
No. The term isn't protected. Colour, fineness, taste and a clear origin tell you much more.

Why is my matcha yellowish?
Often because of less shading, older leaves, or because it's old or has been stored badly.

Is expensive matcha always better?
Not automatically. Look for the signs above. A clearly labelled, single-cultivar, first-harvest matcha is a good indicator.

What does single cultivar mean?
The tin contains matcha from just one variety of the tea plant. Nothing is blended. More in our FAQ.