The ups and downs of tea when brewing are also called "tea dance", which is also an aspect of tea tasting and tea appreciation. The ups and downs of tea are related to the brewing method, the variety of tea, the dryness, humidity and water temperature. The quality of tea is easy to judge according to the shape, smell, color of tea soup and other characteristics of the tea, and it should not have much to do with whether it floats on the water.
To put it simply, this problem is caused by the fact that the tea leaves are not fully soaked during the brewing process. However, if it is to be subdivided, it is related to the type of tea and the form of the finished product.
Green tea, yellow tea. These two types of tea are basically made from tea tree buds, and the finished product is mostly in the form of slender and curly strips or needles. If you take an appropriate amount of tea and put it into water, because the tea leaves are not fully soaked at the beginning, and part of the air is wrapped in the tea leaves, the tea will be found to be accompanied by bubbles slowly overflowing as the tea gradually sinks to the bottom at the beginning of brewing. Therefore, the reason why this type of tea does not sink to the bottom at the beginning of brewing is that the tea contains air bubbles.
White silver needles in white tea. Baihao silver needle is also made of tea bud head, but its surface is covered with white hairs, these hairs have a certain "hydrophobicity" is not easy to be infiltrated, only a few more times, the hairs fall off into the water, and the tea can slowly sink to the bottom. Because the nutrients of Baihao silver needles are mostly in these hairs, when brewing white tea, do not pour out the white tea floating on the water, and it will sink to the bottom after brewing a few more times.
Cake tea, the brewing of lumpy tea. These shapes of tea are pressed to facilitate the storage of the tea leaves. Because the pressing is too tight, it is difficult to fully soak at the beginning of brewing, as long as the tea is awakened for enough time, brew several times, the tea can sink to the bottom.
It is important to note that the ups and downs of tea do not necessarily represent its quality or taste. The ups and downs of some tea leaves are due to their unique shape and density, rather than quality. In addition, individual tea leaves may also contain air pockets, making it easier to float on the water.
In short, in the process of making tea, different tea leaves may present different ups and downs. This phenomenon is the result of a combination of factors such as the density, shape, and size of the tea leaves.