Analysis:

Physically, any water is ok, but it is difficult to make tea in cold water. From the perspective of tea art, it is not appropriate to use cold water to soak.

The brewing of Longjing tea requires a clean tea set, which is generally brewed with transparent glass (pot), porcelain cup or tea bowl. The porcelain in the cup and bowl is white, which is convenient to set off the soup and tea of green tea.

The quality of tea is better. Usually choose clean and high-quality mineral water, and purified tap water is also acceptable. The pH value of water is neutral or slightly acidic. Do not use alkaline water and avoid dark tea soup.

Boil the water for the first time, so that the brewed tea is fresh and refreshing. The water temperature of making tea should be about 80℃, because the chlorophyll of high-quality green tea is easy to be destroyed and turn yellow at too high a temperature, and the tea polyphenols in tea will be oxidized at high temperature, which will make the tea soup turn yellow soon, and many aromatic substances will be lost by volatilization at high temperature, which will make the tea soup lose its fragrance.

The proportion of tea should be appropriate. Usually, the ratio of tea leaves to water is 1: 50 ~ 1: 60 (that is, 1 gram of tea leaves uses 50 ml ~ 60 ml of water), so the brewed tea soup has moderate strength and fresh taste.

The brewing technology is very particular. It is required to hold a kettle and fill the teacup with water. Using the gesture of "Phoenix nods three times", the injected hot water pushes the tea leaves to float up and down, and the tea juice is easy to soak out. In addition, when brewing, a small amount of hot water is often injected to soak the tea leaves first, and then water is injected to the distance from the cup edge 1 cm ~ 2 cm.