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I sorta knew this from experience, that high temperature would make the tea bitter. But why is this on HN?
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the german tea expert Ernst Janssen recommends to also use boiling water to prepare green tea as most of the teas are contaminated with germs and other things. different green tea brands including organic tea brands were tested by the renowned German test.de magazine and they confirmed that, also most of organic teas are contaminated. and since this is nothing you can easily check at home, better use boiling water. h…
edit: Reading the linked article, it seems mostly concerned about contaminants and not germs. Intuitively thinking, I'd imagine higher temps would end up extracting more of those from leaves to the drink than lower temps?
TL;DR no, but it will make it bitter and astringent because more caffeine and catechins will be extracted.
It depends on the green, though. Good-quality green tea from China can often withstand higher temperatures or long brewing, to the point where it's normal to just pinch some tea in a mug and refill with hot water throughout the day.
Earlier quoted context omitted.
It depends on the green, though. Good-quality green tea from China can often withstand higher temperatures or long brewing, to the point where it's normal to just pinch some tea in a mug and refill with hot water throughout the day.
I wouldn't say it is matter of quality; or rather lot of high-quality teas can still be quite sensitive to high temps. Gyokuros mentioned in the article are good example
Sadly, boiling water will absolutely ruin matcha. But I'm too hooked.
TL;DR no, but it will make it bitter and astringent because more caffeine and catechins will be extracted.
It depends on the green, though. Good-quality green tea from China can often withstand higher temperatures or long brewing, to the point where it's normal to just pinch some tea in a mug and refill with hot water throughout the day.