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A printed Certificate of Analysis lab report on a wooden tea-house table with visible tabular elemental data, beside a small ceramic dish of vivid jade-green ceremonial matcha and a wooden chashaku scoop, in soft natural window light

How to Read a Matcha Lab Report: 2026 Guide

Last updated: September 23, 2026 How to Read a Matcha Lab Report: A Founder's Guide By Christian Mauerer, Founder of One with Tea · Published May 7, 2026 The reason a matcha lab report matters in 2026 is simple: the...

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Terraced tea rows on a Shizuoka hillside with black shade netting rigged over the nearer field

The Yabukita Problem: How One Tea Plant Shaped Japan's Matcha Supply

One tea plant covers more than 60% of Japan's tea fields, and Japan's national agricultural research organization states plainly that it is unsuited to organic cultivation and unsuited to matcha. Its name is Yabukita. It was the right answer to...

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A granite stone mill grinding tencha into matcha, fed by a metal funnel, in a mill room dusted with green powder

Why Organic Ceremonial Matcha Is So Hard to Find

Japan had exactly 1,955 hectares of certified-organic tea fields as of 31 March 2025, against 35,100 hectares of tea in total. That is about 5.6% of the country's tea land. But the shortage you run into when you try to...

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Stone mill grinding matcha into fine powder

Stone-Ground vs Machine-Ground Matcha: Does It Really Matter?

By Christian Mauerer, founder of One with Tea · Reviewed August 2026 The honest answer: the grinding method changes the powder, but it does not by itself make a matcha good. A slow granite stone mill grinds matcha into particles...

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A Japanese tea producer evaluating leaf and liquor colour at a cupping bench

Does Chlorophyll Detox Your Body? What the Research Actually Says

Short answer: the chlorophyll detox claim you have read on a hundred wellness pages traces back to real, peer-reviewed research, but that research used chlorophyllin, a semi-synthetic salt made from chlorophyll, not the chlorophyll in a green leaf. The best...

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Cha or tea? It depended on the port

Why Half the World Says Cha and the Other Half Says Tea

Nearly every language calls tea cha or te, two readings of one Chinese character. The sea-versus-land rule is wrong: what decided it was which port a country traded at.

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Japan exports the same weight of tea as in 1932

Japan Exports the Same Weight of Tea Today as in 1932

Japan exported about 13,399 tonnes of tea in 1932 and 13,125 tonnes of green tea in FY2025. The weight barely moved in 93 years. What changed is composition and price: matcha.

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Christian Mauerer in a Shizuoka tea field inspecting cultivar bushes

Japanese Tea Cultivars: The Plants Behind Matcha and Green Tea

By Christian Mauerer, founder of One with Tea · Reviewed August 2026 A cultivar is a tea plant bred for a particular set of traits and then cloned by cuttings, so every bush is genetically the same. Japan grows around...

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Can You Drink Matcha Every Day? Daily Amounts and Ritual

Can You Drink Matcha Every Day? Daily Amounts and Ritual

Yes. For most healthy adults, drinking matcha every day is a normal habit, and a four-week randomized, placebo-controlled trial that measured sleep with EEG found no change in total sleep time, sleep latency or sleep efficiency in people taking 2.7...

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