The time and frequency of tea brewing are very different, which is related to the type of tea, The water temperature of making tea, the amount of tea used and the habit of drinking tea are all related, and cannot be generalized.
If you drink ordinary red and green tea in a teacup, each cup Put about 3 grams of dry tea, brew it with about 200 ml of boiling water, cover it for 4-5 minutes, and drink it. The disadvantages of this brewing method are: if the water temperature is too high, it is easy to scald the tea leaves (mainly refer to green tea); if the water temperature is low, it is difficult to brew the tea flavor; Cold, color, aroma and taste are all affected.
The improved brewing method is: after putting the tea leaves into the cup, pour a small amount of boiling water to submerge the tea leaves, and cover with 3 cups. After about 10 minutes, add boiling water until it is 70% to 80% full, and then drink it while it is hot. When there is about one-third of the tea soup left in the cup, add boiling water, so that the concentration of the tea soup before and after can be more even.
According to the measurement, when the general tea is brewed for the first time, its solubility The substance can leach 50–55%; after soaking for the second time, about 30% can be extracted; after soaking for the third time, about 10% can be extracted; after soaking for the fourth time, there is little left. Therefore, it is usually advisable to brew three times.
If you drink fine-grained, well-kneaded red crushed tea and green crushed tea, after brewing with boiling water for 3-5 minutes, the active ingredients Mostly extracted, ready for a quick drink. Drinking instant tea also adopts a one-time brewing method.
When drinking oolong tea, you usually use a small purple sand pot. In the case of using a large amount of tea (about half a pot), the brewing time should be gradually increased from the second brewing, so that the concentration of tea soup before and after is relatively uniform.
The temperature of water for making tea and the amount of tea used also affect the length of brewing time. If the water temperature is high, more tea will be used, and the brewing time should be short; if the water temperature is low, less tea will be used, and the brewing time should be longer. How long is the brewing time? The standard is that the concentration of the tea soup is suitable for the taste of the drinker.
According to research, after brewing green tea once, all kinds of effective The leaching rates of the ingredients are quite different. Amino acid is the most water-soluble component in tea, and the leaching rate of one brewing is as high as 80%; followed by caffeine, the leaching rate of one brewing is nearly 70%; the leaching rate of tea polyphenols is lower, about It is about 45%; the leaching rate of soluble sugar is lower, usually less than 40%.
Black tea is generally more twisted than green tea during processing, especially red crushed tea, which has small particles and a high rate of cell fragmentation, so one brewing Brewed tea tends to have a much higher extraction rate than green tea.
At present, teabags are becoming more and more popular at home and abroad. Teabags are not only convenient to drink, but also increase the leaching of effective substances in the tea and increase the concentration of tea soup. According to comparison, teabags have about 20% more extraction than bulk tea.
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