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Where is more caffeine - in a cup of tea or in a cup of coffee? Detailed answer

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Where is more caffeine - in a cup of tea or in a cup of coffee?

In a cup of coffee.

The dry tea leaf contains a higher percentage of caffeine by weight than the coffee bean. However, the average cup of coffee contains three times more caffeine than the same amount of tea, because more beans are used to make coffee.

The amount of caffeine in tea and coffee depends on a number of factors. The higher the water temperature, the more caffeine is drawn from the leaves and beans. Espresso, for example, is made with high-pressure steam, and a drop of this divine drink contains more caffeine than a drop of brewed coffee. The caffeine content is also affected by the time during which water is in contact with tea leaves or coffee beans. The longer the contact, the higher the percentage of caffeine.

In addition, the variety of coffee and tea, the area where they were grown, how long the coffee beans were roasted and how the tea leaf is cut play an important role.

The darker the coffee roast, the less caffeine it contains. In the case of tea, the concentration of caffeine in the bud and upper leaf of the bush is higher than in the large lower leaf.

Paradoxically, an average 30 ml shot of espresso contains about the same amount of caffeine as a 150 ml cup of Brooke Bond tea. So from a portion of cappuccino or latte "caffeine hit" will be no stronger than from a mug of tea. On the other hand, a cup of instant coffee contains only half the amount of caffeine found in the same amount of Americano.

Author: John Lloyd, John Mitchinson

 Random interesting fact from the Great Encyclopedia:

What kind of work did Siv Gustavson, a Swede, imitate the barking of dogs in the streets?

In the 1970s, Siv Gustavson was a municipal worker in Stockholm, Sweden, who could bark in a variety of ways to suit different dog breeds. Her job was to bark in city streets to elicit a response from dogs. In this way, she collected information about houses whose owners did not pay tax on dogs.

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