The new tea is the tea that was harvested that year, and the old tea is the tea of ​​the following year. The purchase of tea generally seeks for newness instead of aging. This is because the color of old tea is withered and yellow, the aroma is low, the taste is flat, and there is an unpleasant old taste when drinking. Therefore, old tea is generally not very popular, so how to distinguish new tea from old tea in daily purchase? Please see the introduction of Zhenan Green Tea 3505 below.

　　 First of all, it is to watch color.

　　 Green tea is green in color, and the soup is bright yellow and green. The black tea is dark in color and the soup is bright in red and orange, which is the symbol of the new tea. During the storage of tea, some substances that make up the color of tea will slowly decompose or oxidize under the action of light, gas, and heat. For example, the decomposition and oxidation of chlorophyll in green tea will make the color of green tea dull and dull. The increase in theafuscin will make the green tea soup color become yellowish brown and lose its original fresh color; when black tea is stored for a long time, the tea polyphenols in the tea will undergo oxidative condensation, which will make the color darker. The increase in thea brown pigment will also make the soup color turbid and unclear, and will also lose the freshness of the new black tea.

　　 followed by smelling incense.

　　 Scientific analysis shows that there are more than 300 kinds of ingredients that make up the aroma of tea, mainly alcohols, esters, aldehydes and other characteristics. During the storage of tea, they can not only volatilize continuously, but also slowly oxidize. Therefore, as time goes by, the aroma of the tea will change from thick to light, and the aroma will change from the fresh fragrance of new tea to low and turbid.

　　 The last is taste.

　　Because in the storage process, the phenolic compounds, amino acids, vitamins, etc. in tea constitute the flavor characteristics, some of them are decomposed and volatilized, and some are condensed into water-insoluble substances, thereby reducing the effective flavor substances soluble in the tea soup. Therefore, no matter what kind of tea, the taste of most new tea is mellow and refreshing, while the taste of old tea is light and unpleasant.

Zhenan Chinese Green Tea said: Although new tea is better than old tea, there are some teas that are better as they age. For example, our country’s unique Hunan black tea, Guangxi Liubao tea, Yunnan Pu’er tea, all of which have good aroma of old tea and new tea aroma. difference. In addition, the Wuyi rock tea in the green tea category is not bad for a long time. The older the tea, the higher the aroma and the more mellow the taste. Therefore, it is impossible to generalize whether the old tea is good or bad.