green tea & health
influence of components the taste of green tea
a direct link between the components of green tea and its taste. Some cultivars and some tea types have more or less umami, astringency or bitterness. Even more importantly, water temperature has a direct impact on
how those components are released.
Therefore, by controlling water
temperature, you can adjust the tea taste to your preference.
1) Amino acids release the umami taste and are easily dissolved regardless of the
2) Astringency and bitterness are linked with caffein and catechin (tannin). Those are released at higher temperatures. Therefore, high quality tea should be prepared with a lower temperature.
Note that catechin and caffeine have both positive health impact, so they should not be avoided at all costs. Depending on your personal preferences, however,
you may want to make sure that not too much of them is released.
Should I drink green tea before going to bed? What about pregnant women or
Green tea contains caffeine but not all kinds have the same amounts. It is recommended to choose a kind of tea with low caffeine levels (like Shira-ore
), or simply use about half the amount of leaves. In Japan, in the tea farming areas, babies
are given watered down green tea to drink as soon as they start eating solid
foods (6-8 months).Green
tea on an empty stomach
Green tea rich in caffeine and catechin may be tough on an empty stomach. We recommend to drink weakly brewed teas in these cases.
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