What matcha tastes like, and why yours might not

What does matcha taste like? The short answer

Matcha tastes savory-sweet first — the umami of L-theanine, which shading concentrates in the leaf — then green and slightly marine, then cleanly bitter and a little astringent at the finish. The texture is as much of the experience as the flavor: a whisked bowl is thick, foamy and almost creamy, because the leaf itself is suspended in the water rather than steeped out of it. A bad bowl is harsh, thin and grassy, and it usually has one of five fixable causes.

A vocabulary

Tasting anything is easier with words for it, and matcha has its own. Japanese tasters use a small set of terms that map cleanly onto what is in the leaf.

Umami (旨味). The savory, broth-like, mouth-filling taste, the same sensation that makes dashi and parmesan satisfying. In matcha it comes mainly from amino acids, above all L-theanine, and it is the taste that shading is designed to produce. First-harvest, well-shaded powder is rich in it; cooking grades have little.

Sweetness (甘味). Not sugar-sweet but a rounded, lingering softness that sits alongside the umami. It comes from the same amino acids and from the absence of harshness. Tasters describe a good koicha as sweet with no sugar in it.

Bitterness (苦味). The taste of catechins and caffeine. Present in every matcha; clean and short in a good one, harsh and long in a poor one or a badly made bowl.

Astringency (渋味). Not a taste but a sensation — the dry, puckering feeling on the tongue and gums from catechins binding to proteins in the mouth. Distinct from bitterness, though they travel together. Shading reduces it.

Aroma. The dry powder smells sweet, green and faintly of hay; the wet paste smells more strongly of the same; the whisked bowl smells of what tasters call the cover aroma.

Cover aroma (覆い香, ooika). The signature of shaded tea: a marine, nori-like, deep green note that comes from a compound the plant produces under cover. Gyokuro has it; matcha has it in concentration. People who have not met it call it seaweed or spinach. People who have call it the point.

Texture. Body, foam and finish. A well-milled, well-whisked bowl is thick and creamy with a fine foam; a coarse powder is gritty; a badly whisked bowl is thin with large bubbles.

Finish. What remains after thirty seconds. A good matcha leaves sweetness and a faint green echo; a poor one leaves a dry, bitter coating.

Where each taste comes from

Almost every word above traces to one decision in the field or one step in the process.

Shading is the master variable. For the three to four weeks before harvest the tea rows are covered — black cloth at roughly 85% shade in modern fields, reed-and-straw canopies in the oldest ones — and under cover the plant changes what it makes. In sunlight, tea plants convert the L-theanine produced in their roots into catechins in the leaf. Shading stops that conversion. The leaf keeps its theanine, which is sweetness and umami, and makes fewer catechins, which are bitterness and astringency. It also produces more chlorophyll, which is the color, and the cover aroma compound, which is the depth. Japanese research stations have measured all four effects. NARO, the national agricultural research organization, measured it across domestic matcha: shading lowers one of the main catechins, the finer tins carry more theanine, and every matcha clears a chlorophyll line that plain powdered green tea does not. Twenty days or more under cover is the usual figure for tencha, and the difference between ten days and twenty-five is in the cup.

Harvest decides the base. The first flush of spring, ichibancha, carries the most amino acids and the least harshness. It is the harvest drinking matcha is made from. Later pickings are greener, sharper and thinner, and go to cooking and latte powders, where those flavors are what is wanted.

Cultivar sets the character. Asahi, the cultivar that trades highest as tencha, gives deep umami and a thick body and is favored for koicha. Samidori is the balanced, widely planted cultivar of hand-picked Uji tencha. Gokou is strongly savory and stands up in milk. Okumidori carries the most chlorophyll and gives a bright, clean cup. Yabukita, Japan’s dominant cultivar, is sharper and yellower under shade. Almost every commercial matcha is a blend of several, adjusted each year to keep a named blend tasting the same.

Milling sets the texture. Matcha is ground to roughly 5–20 microns; the finest drinking grades are around 5–10. Stone-milled particles are irregular and foam well; very fine powder feels like cream; coarser powder settles and feels gritty. Stone mills grind slowly — anywhere from about 40 g to 1 kg an hour depending on the mill — to avoid heating the powder, because heat dulls the aroma.

Freshness decides whether any of it survives. Chlorophyll degrades under light; aroma compounds evaporate and oxidize in air; the powder takes on humidity and clumps. An opened tin fades in weeks. Japanese sellers generally advise finishing it within about two weeks to a month. Ippodo’s own guidance is to use an opened package within around a month.

Taste by preparation

The same tin tastes different in each of the four common bowls, and knowing what each preparation emphasizes helps you choose the tin.

Usucha, the whisked bowl — 2 g in 60–70 ml at 70–80°C — is the balanced view. Umami and sweetness lead, the green depth follows, the bitterness is present and short, and the foam softens everything. It is the preparation the tin was blended for, and the one to judge it by.

Koicha, the thick tea — about 4 g kneaded with 30–40 ml — is the concentrated view. Nothing is diluted, so umami becomes broth-like and almost sweet, the cover aroma is strong, and any harshness in the powder is exposed at once. It is why makers tag only their upper blends for koicha, and why a good one is a revelation and a poor one is undrinkable.

The latte hides half the vocabulary and reveals the other half. Milk fat coats the tongue and mutes bitterness and astringency; sugar in the milk sits on the sweetness; what survives is the green depth and the body. A delicate, expensive usucha blend vanishes in milk. A bolder, more bitter thin-tea blend, or a powder milled for lattes, keeps its identity — which is why the best tin for lattes is rarely the best tin for the bowl.

Iced, shaken or whisked cold, is the softest view. Cold water extracts less of the bitter compounds, so the drink is lighter, sweeter and more refreshing, with the green notes forward and the umami quieter. Blends made for cold whisking foam better; any thin-tea blend works.

Taste by tin

If you have two tins and want to know what the label did, here is the map, with the usual caveat that blends vary and makers disclose unevenly.

Regional descriptions are generalizations of house styles, not rules. Named cultivars and stated harvest are stronger predictors than region.

Why it might be bitter, in order of likelihood

1. The water was too hot. Boiling water pulls bitterness forward and flattens the foam. Aim for 70–80°C. If you have no thermometer, let boiled water sit in a cup for two to three minutes first.
2. Too much powder for the water. Two grams to 60–70 ml is the standard bowl. Doubling the powder without doubling the water is not a stronger usucha; it is a rough koicha from a powder that was not made for it.
3. The tin was milled for cooking. Powders sold for baking and lattes are made from later, less shaded leaf, with more catechins and less theanine, because those flavors survive butter and milk. Whisked plain, they taste sharp. That is what they are for, and it is not a fault in your hand.
4. The tin is old or was kept in light. Chlorophyll degrades under light and the powder browns, loses its aroma and gains a hay-like flatness. A refrigerated tin opened cold collects condensation that ruins it faster. Buy small, keep sealed and dark, and finish within a month.
5. It was not sifted. Clumps deliver concentrated bites of dry powder that burst bitter. Sifting takes thirty seconds.

A quick test separates the first two causes from the last three: make the same tin again at 65°C with exactly 2 g and 70 ml, sifted. If it is now good, it was you. If it is still harsh, it is the tin.

A tasting protocol

If you want to learn the vocabulary rather than read it, taste two tins side by side once a week.

• Same day, same water — filtered, at 70°C — same 2 g weighed on a scale, same bowl shape.
• Smell the dry powder in the tin. Note color: vivid green, dull green, or brownish.
• Smell the paste after the first splash of water. The cover aroma appears here.
• Whisk each identically and look at the foam: fine and even, or coarse and collapsing.
• Sip, and attend to the order — sweetness and umami first, green depth, bitterness, astringency — then wait thirty seconds and note what remains.
• Write three words for each tin. Next week, taste again and see whether the words hold.

Within a month you will be able to tell a first harvest from a second by smell, and a well-shaded powder from a lightly shaded one by the sweetness alone. That is the whole of expertise in matcha: attention, repeated.

What it is not

Matcha does not taste like matcha-flavored things. Lattes at coffee chains, ice cream, cookies and green confectionery are built on sugar, milk fat and usually a cooking-grade powder, and they taste of those — pleasant, sweet, faintly green. If you have only had matcha in that form, the whisked bowl will seem austere for the first few days. Then, usually, the other things start to taste sweet and the bowl starts to taste of something.

Nor does it taste like steeped green tea. Sencha is an infusion of sun-grown, rolled leaf: brisk, grassy, light, a little drying. Matcha is the whole shaded leaf in the cup: thick, savory, deep. Gyokuro — shaded like tencha but rolled and steeped — is the bridge, and if you like one you will usually like the other.

Matcha with food

The traditional pairing tells you something about the taste. In a tea gathering the sweet is eaten before the bowl, not with it: a piece of wagashi — bean paste, rice flour, a little sugar — sits on the tongue, and then the bitterness and umami of the tea meet it. The sweet makes the tea taste rounder; the tea makes the sweet taste cleaner. At home, the same logic works with dark chocolate, a dried fig, a shortbread, a slice of pear. What does not work is anything rich or salty alongside a plain bowl; the fat coats the tongue and the tea disappears. Matcha in food — cakes, ice cream, cookies — is a different thing again. Baking drives off the aroma and the sweetness of the leaf and leaves the color and a green bitterness, which is why cooking powders, sharper and cheaper, are the right tool there and drinking powders are wasted.

How the taste changes through the year

Matcha has a season, and the season shows. Tencha is harvested in May, but the traditional calendar does not open the new tea at once. The leaf was sealed in jars and stored through the summer, and the year’s matcha was first ground and served in November, at the ceremony called kuchikiri, the opening of the jar. The reason was taste: fresh tencha is bright and a little sharp, and a few months of rest round it. Most houses today mill through the year from cold-stored tencha, so the bowl you drink in March and the bowl you drink in October come from the same harvest at different ages — subtly sweeter and softer later, subtly greener and brighter early. Once the tin is opened, the direction reverses and the clock runs fast: the aroma goes first, then the sweetness, then the color. A tin at its best is one opened recently from tencha stored well.

As the bowl cools

Temperature moves the taste as much as the tin does. Hot, at 75°C, a bowl leads with aroma and a forward bitterness; the umami is there but the heat sharpens everything. As it cools toward 60°C the bitterness recedes, the sweetness comes forward and the body seems thicker. Cold, at ice temperature, the bitter compounds are barely perceptible and what is left is a light, sweet greenness — which is why iced matcha tastes so different from the same powder hot, and why a powder that seems harsh hot is often lovely cold. Drink the hot bowl in a few sips before it cools too far; drink the cold glass slowly. Somewhere around 65°C is where many people find the balance, and it is the reason for the 70–80°C water: it lands there by the time the whisk is out of the bowl.

A glossary

• Usucha — thin tea, the whisked bowl: about 2 g in 60–70 ml.
• Koicha — thick tea, kneaded: about 4 g in 30–40 ml, no foam.
• Tencha — the shaded, unrolled, destemmed leaf that is ground into matcha.
• Ichibancha — the first harvest of spring; the source of drinking matcha.
• Ooika — the cover aroma; the marine, nori-like note of shaded tea.
• Umami — savory depth from amino acids, mainly L-theanine.
• Shibumi — astringency; the drying sensation from catechins.
• Nigami — bitterness; the taste of catechins and caffeine.
• Awa — the foam; fine and even in a good bowl.
• Kuchikiri — the November opening of the year’s tea jar.

Common descriptions, decoded

People reach for the same handful of words about matcha, and most of them point at something specific.

• “Creamy” — the foam and the suspended powder; a texture, produced by a fine grind and a fast whisk, not a flavor.
• “Vegetal” or “spinach” — the cover aroma and the chlorophyll of shaded leaf; a good sign in a plain bowl.
• “Seaweed” or “fishy” — the same cover aroma read by a palate that has not met it; strong in koicha, gone in a latte.
• “Grassy” — a later harvest or lightly shaded leaf; more catechins, less theanine.
• “Sweet” — L-theanine, in a well-shaded first-harvest powder; it is not sugar and it lingers.
• “Chalky” or “dusty” — unsifted powder, a coarse grind, or a bowl whisked too slowly to suspend it.
• “Smooth” — low astringency; shading and a first harvest.
• “Earthy” — usually an old tin; the fresh version of the same powder was green, not earthy.
• “Bitter” — see the diagnostic above; clean and short is correct, harsh and long is a fault.

The learning curve

Most people’s first bowl is a disappointment and their tenth is not. The palate learns umami slowly, the way it learns black coffee or dry wine; the bitterness that dominates the first bowl recedes as the sweetness under it comes forward. A good tin, cool water, 2 g, a fine foam, and a small sweet eaten before the tea shorten the curve considerably. After that the vocabulary above stops being a list and becomes what you taste.