Powerful antioxidant, superfood, miracle elixir: matcha attracts enthusiastic headlines. But what exactly is this finely ground Japanese green tea, what does the evidence say, and how can you use it in everyday life? Here we explore its origins, how the powder is produced, the five grades commonly advertised, the compounds found in tea leaves and practical ways to enjoy matcha in drinks, cooking and homemade beauty preparations. We also distinguish traditional uses from health claims that have not been established for a cup of tea.
Matcha: finely powdered green tea and its distinctive qualities
Matcha is made by grinding carefully prepared green tea leaves into an exceptionally fine powder. The tea plants used for traditional Japanese matcha are shaded before harvest, generally for several weeks. This change in light encourages the leaves to retain a vivid green colour, influences their chlorophyll content and helps shape their amino-acid profile. The precise levels of caffeine, catechins and L-theanine vary with the cultivar, growing conditions, processing and harvest.
After harvesting, the leaves are processed into tencha, the material that is milled to produce matcha. The vivid powder is not prepared quite like ordinary loose-leaf tea. To make a drink, a small quantity is placed in a bowl with warm water and briskly whisked using a chasen, the traditional Japanese bamboo whisk. The powder remains suspended in the water and is consumed rather than being filtered out.
This difference matters: with matcha, you swallow the powdered leaf itself, whereas in a conventional green tea infusion the leaves are removed after steeping. That means some substances present in the leaf, including caffeine, polyphenols and naturally occurring minerals, can be consumed in different quantities. It does not automatically mean that matcha supplies a clinically meaningful amount of every vitamin or mineral, or that any particular medical benefit is proven.
Matcha contains green-tea catechins such as EGCG (epigallocatechin gallate), together with caffeine and the amino acid L-theanine. Researchers have investigated these compounds in relation to antioxidant activity, alertness, attention and perceived relaxation. The results depend on the study and the dose: a laboratory finding or a trial involving concentrated extracts cannot be directly applied to an ordinary bowl of matcha.
To explore the subject in greater detail, read our guide to matcha, antioxidants, L-theanine and caffeine.
Matcha and Japanese tradition
Matcha has recently become fashionable in Western cafés, but the tradition of preparing powdered tea has a much longer history in East Asia. Tea travelled from China to Japan through cultural and Buddhist exchanges. Accounts of its early arrival vary; the Japanese monk Eisai played a major role in promoting tea in Japan around the twelfth century, while the more formal Japanese tea ceremony developed over subsequent centuries.
Tea was appreciated at different times by the imperial court, Buddhist monks and warrior elites. Its caffeine helped make it a popular companion to periods of study and contemplation, while the preparation itself gradually became a refined social and cultural practice. In modern Japan, chanoyu, the tea ceremony, is associated with hospitality, attentiveness, respect, simplicity and harmony. Matcha is enjoyed outside formal ceremonies too, both in everyday drinks and in many sweet dishes.
Popular writing sometimes links matcha to the famous longevity of Okinawa's inhabitants. This is part of the way Japanese food culture is discussed; it is not evidence that matcha alone explains exceptional longevity or protects against disease.
Five matcha grades: understanding different qualities
The French Chabiothé article describes five commercial grades, from culinary to prestige. They are useful labels when comparing taste and intended use, but there is no single official, universally regulated five-grade system. A grade name is assigned by the seller or producer. Origin, harvest, freshness, particle size, taste and independent quality controls are more meaningful than the label alone.
1. Culinary grade
Culinary matcha is designed primarily for cooking, baking, desserts and other recipes rather than being whisked and drunk plain. Its flavour is typically more pronounced, sometimes bitter, with less delicate umami. The colour can be somewhat darker or yellow-green. Depending on the producer, the leaves may come from later harvests or from less tender parts of the plant. Such matcha works well when flour, chocolate or other strong flavours are also present.
2. Café or blending grade
Often marketed for matcha lattes, smoothies and mixed drinks, blending matcha is intended to retain a recognisable green-tea flavour when combined with milk, plant-based alternatives or sugar. It can have a deeper green colour and a bold, slightly bitter taste. Its caffeine and L-theanine content cannot reliably be inferred from the grade name alone.
3. Premium or everyday grade
Premium matcha is generally positioned as a good-quality powder suitable for being whisked with water and enjoyed regularly. It aims to balance a pleasing colour, a rounded vegetal flavour, mild bitterness and price. Chabiothé describes the matcha it offers as premium grade: an approachable choice for people discovering powdered tea. The company explains that purchasing larger quantities helps keep its retail prices accessible.
4. Ceremonial grade
“Ceremonial” normally suggests matcha suited to traditional preparation with water, where the taste of the tea is at centre stage. Such products are often described as vivid green, smooth and rich in umami, sometimes made from tender young leaves and ground carefully. However, the term is a marketing or trade convention, not a guarantee of particular nutrient levels or proven health effects.
5. Prestige grade
Some brands use “prestige” for especially refined and expensive matcha. Their powders may be noticeably sweet-tasting, low in bitterness and strongly umami. Prices can be considerably above ordinary ceremonial-grade offerings. Once again, a higher price or prestige label does not prove that the drink will produce stronger antioxidant or other health benefits.
For a good introduction, compare small amounts of different matcha powders with plain water before using them in a latte or dessert. Taste, aroma and freshness will tell you much more about your own preferences than promotional claims.
What about the health benefits often attributed to matcha?
Much of matcha's reputation comes from its polyphenols and caffeine. A scientific paper published in 2003 is frequently cited for finding a very large difference in EGCG under particular matcha-versus-green-tea extraction conditions, sometimes repeated as “137 times more”. That figure is not a universal comparison between every bowl of matcha and every cup of green tea, nor does it show that a matcha drink can prevent cell ageing or cancer.
EGCG belongs to the catechin family of plant polyphenols, which display antioxidant activity in laboratory experiments. Such activity is scientifically interesting, but it does not establish the claims sometimes made about detoxification, lowering blood pressure, controlling cholesterol, preventing tumours or burning fat. The European rules on food health claims also limit the medical promises that may be made in marketing tea.
The caffeine in matcha can temporarily improve alertness, while the naturally occurring L-theanine has been investigated in studies of attention and relaxation. People respond differently: some enjoy a sense of calm focus, while others experience nervousness or sleep disruption. Matcha remains a caffeinated food, not a treatment for anxiety, memory problems or fatigue.
Because the entire leaf is consumed, it is also worth considering substances that the plant absorbs from its environment, including aluminium. Chabiothé discusses this issue in its dedicated article on matcha and its compounds. As with any concentrated powdered tea, moderation and appropriate product-quality checks are sensible.
Matcha beyond the tea bowl
Matcha is versatile in the kitchen: mix a little powder into cake batters, shortbread biscuits, brownies, crêpes, ice cream, tiramisu or a smoothie. It provides a distinctively green colour, a vegetal aroma and an appealing slight bitterness that works particularly well with white chocolate, milk or creamy desserts. A matcha latte is another approachable way to get to know its flavour.
Matcha also appears in homemade face-mask and hair-care recipes. These uses are part of modern cosmetic traditions, but skin-protection or anti-ageing benefits should not be assumed simply because the powder contains antioxidants. Patch-test any homemade mixture first and keep it away from irritated skin and eyes.
How do you prepare it? Sift a little matcha into a bowl, add water at roughly 70–80°C and whisk briskly with a bamboo whisk until a fine foam forms. For detailed instructions and recipes, read how to prepare matcha traditionally or at home.
Further reading in the original French article: Journal des Femmes (cooking); Blog Nutrition Santé (matcha and skin); and Mr Plantes. These sources are mentioned for continuity with the French page; they do not independently validate medical claims.
FAQ — Matcha green tea
What is matcha tea?
Matcha is a finely ground powder made from processed green tea leaves, traditionally produced in Japan. It is whisked into water and consumed without filtering the leaves, unlike ordinary loose-leaf tea.
What are its main properties?
Matcha naturally contains catechins such as EGCG, caffeine and L-theanine. These compounds are studied in nutrition science; their presence does not prove that the drink prevents illness, strengthens immunity or delivers specific medical effects.
Does matcha contain caffeine?
Yes. The quantity in a serving depends on the matcha and the weight of powder used. Its combination with L-theanine does not guarantee that everyone will feel calmer or avoid caffeine-related side effects.
Does matcha help with weight loss?
Matcha is sometimes promoted as a slimming drink, but the available evidence does not establish it as a weight-loss remedy. Drinking it without added sugar may simply be a useful alternative to some sweetened beverages.
Can I drink matcha every day?
Some people enjoy modest servings regularly, but there is no universal dosage that guarantees benefits. Consider total caffeine intake, personal tolerance and the issue of elements such as aluminium in powdered tea. Pregnant people and those with relevant health concerns should seek personalised advice.