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Matcha questions answered

One canonical page per question, answered in the first paragraph and backed by sources. Caffeine questions have their own full guide at how much caffeine is in matcha.

What is matcha made of?Matcha is made of one ingredient, shade-grown green tea leaves called tencha, steamed, dried and stone-ground to powder. How it is grown and processed.
Is matcha good for you?What the evidence says about matcha and health (antioxidants, L-theanine and caffeine), and where the claims outrun the research. Balanced, sourced answers.
How do you make matcha?How to make matcha at home: sift 2 grams, add 70 to 80 degree water, whisk in a W motion to a foam. Traditional method, no-whisk shortcuts and latte steps.
Where does matcha come from?Matcha began in Song dynasty China and reached Japan with Zen monks. Why Uji and Nishio make Japan's most celebrated matcha today, and how it got to NZ cafes.
Where can you buy matcha in NZ?Matcha at Woolworths (formerly Countdown), New World, Pak'nSave, Kmart and Chemist Warehouse, the NZ specialist brands, and what to check before you buy.
Why did my matcha turn brown?Matcha turns brown when its chlorophyll degrades through oxygen, heat, light, humidity or simple age. What browning means, whether it is safe, and the storage that slows it.
Why is matcha so popular?Why matcha took off: the whisking ritual made for short-form video, the coffee-alternative narrative, cafe expansion across NZ, the supply squeeze and what it costs now.
Does matcha burn belly fat?No food burns fat from a chosen body part. What the Cochrane review and catechin trials actually found about green tea, metabolism and weight, and why the doses matter.