Questions tagged [tea]

Questions about the selection and preparation of tea leaves and beverages.

There are several types of tea, which all come from the same plant (Camellia sinensis). They vary in the way they're grown and processed after harvest:

  • Black tea is allowed to wilt and fully oxidize before drying. It is typically prepared in boiling water.
  • Green tea is dried before it can wilt or oxidize. It is typically prepared with substantially cooler water, as low as 140°F/60°C.
  • Oolong tea is allowed to wilt and partially oxidize. It is typically prepared with slightly below boiling water.
  • White tea is allowed to wilt but not oxidize. It is typically prepared in approximately 180°F/82°C water.

All types of tea are often combined with herbs and other flavorings to make beverages like mint tea or chai. Often milk, honey, or sugar are added to the tea after steeping.

There are also steeped beverages from plants other than Camellia sinensis:

  • Tisanes, also known as herbal teas, include mint, hibiscus, anise, lemon grass, rooibos, etc.
  • Coffee, made from the beans of several plants in the genus Coffea.
  • A traditional South American beverage made from the plant Ilex paraguariensis.
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Tea water: heat to 80 °C or boil to 100 °C and let it cool down to 80 °C?

Boiling water is too hot for some teas. Today I heard that it's better to boil water to 100 °C and let it cool down to 80 °C rather than heat water to 80 °C. Is this true? Does it really affect properties of the water, other than killing bacteria?
Atte Juvonen
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What is the difference between green, white and black tea?

What is the difference between green, white and black tea? Are all based on original tea leaves?
awe
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What difference does oxygen content of tea water make?

I've heard the advice that water should be boiled for tea only one--that when boiled it loses dissolved oxygen, and if there is insufficient oxygen in the water, the flavor of the tea is (somehow) affected. This doesn't seem to make sense to me. If…
Ray
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My tea bags are expired, can I still use them?

This box of tea has an expiration date which has passed but I would like to know if I can still use it. What do you think?
TheXed
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How much caffeine would there be if I reuse tea leaves in a second brewing?

If you look for information about the amount of caffeine present in a cup of tea, the amounts vary depending on the kind of tea, if the tea is bagged or loose leaves, the brand, and other factors. Nonetheless, the values estimated range from the 25…
Charlie
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How can I cool tea quickly?

Imagine you're making someone a tea, but for whatever reason they have to leave soon. How can I cool the tea so that they don't have to choose between leaving it unfinished or burning their mouth? Ideally the method should not only be fast, but also…
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Does Boiling Water, Instead of Warm Water, Hurt the Flavor of Tea/Hot Chocolate

I have a counter-top water kettle that I frequently use to boil water for tea, hot chocolate, and powdered drinks (e.g. chai). I don't think anything of it when the water starts boiling and keeps on boiling for 20 to 30 seconds before the kettle…
Chad
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What research is there on tea preparation?

I'm a fan of modernist cooking, and its emphasis on precise measurements and consistency. I'm curious how to apply this to tea preparation - in particular, several things: It seems to be well established that different types of tea should be…
Nick Johnson
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Is it safe to reuse loose tea leaves the next day? What precautions need to be taken for storing tea for reuse?

I'm a fan of green tea and I find myself reusing the tea leaves 2-3 times a day. Sometimes I'll just store the leaves and reuse them the next day but it got me thinking if what I'm doing is actually "safe", I know that the taste isn't the same. So…
Serge
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What kind of tea do you boil for 45minutes?

In her autobiographic graphic novel Embroideries Marjane Satrapi casually mentions how she used to prepare tea with a samowar during her childhood by properly boiling the tea leaves for 45minutes. Proper boiling is emphasized in the text. From…
mart
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What is the proper way to prepare a cup of English tea?

I have been searching the internet and I am getting conflicting information about how to prepare a "proper" cup of English tea. Some sites state that you absolutely never use a tea bag. They state that you are to use loose tea only and serve while…
steelersquirrel
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What is the white foam that builds up when I make tea?

I microwave water in order to make tea. After it is microwaved and I drop the tea bag(green tea) into the water, thick white foam builds up on the top. What is it and should I worry about drinking it?
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What causes tea to be bitter, and how can I avoid that bitterness?

How does tea become bitter between the moment it is packaged and the moment I drink it? Are there any chemical processes that take place when tea is stored or brewed that I can control to prevent making a cup of bitter tea? If the causes of…
Laura
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Does black tea have the highest level of caffeine? If so, why?

It's said that tea, in general, has lower levels of caffeine than coffee, and that black tea has more caffeine than green tea (which has more caffeine than white tea). This suggests that the higher degree of fermentation of the tea, the higher the…
citizen
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Why does Green Tea taste sour as it cools down?

It seems every time I make a cup of green tea, if I don't finish it while it's still considerably hot, it starts to get really sour and tastes awful. Why is this and how can I prevent this? What am I doing wrong?
erator
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