Is black tea fermented tea?

As we all know, fermented tea refers to tea that has a "fermentation" production process. Fermented tea is also divided into lightly fermented, semi-fermented, fully fermented, and post-fermented teas. However, many people are confused about which teas are fermented teas, especially for black tea. Let me give you a detailed introduction on whether black tea is fermented tea. Is black tea fermented tea?

First, is dark tea a fermented tea? Dark tea, one of the six major types of tea in my country, is a post-fermented tea. The picked fresh leaves need to be piled up after being withered and rolled. Pile fermentation is a key process in the production of dark tea. After the tea leaves are rolled and twisted, they are piled up to keep them warm and moist. During this process, a large number of microorganisms are involved in the transformation of tea ingredients, forming the unique mellow and smooth taste of black tea and the effects of losing weight, reducing blood sugar and lowering blood sugar. It is 100% fermented tea. Because the color of the tea after brewing is bright red or dark red, it is very distinctive and is called black tea, such as Assam black tea. The aroma of black tea will produce completely different smells depending on the type, which is difficult to describe, but the aroma emanating from the depths of the throat after drinking makes people feel refreshed and comfortable. However, the tea stains are heavy, so it is best to brush your teeth after drinking.

Second, the chlorophyll in the tea leaves is destroyed during the production process of oolong tea, and the degree of fermentation ranges from 20% to 70%, which is a semi-fermented tea, such as Tieguanyin, Wuyi Rock Tea, etc. During the production process, semi-fermented tea is made by sunlight withering, indoor withering, stir-frying, rolling and drying. This tea has the unique fragrance and sweetness of green tea and the color and fruity aroma of black tea. Because this tea is partially fermented, the leaves have a special beauty of "green leaves with red edges" [3].

Is black tea fermented tea? Lightly fermented tea is tea that has not undergone the fermentation process, namely the so-called green tea. Because it is not fermented, it has a natural smell, a refreshing fragrance, and a emerald green color. Green tea can be divided into two types due to different production processes: one is made by steaming the green tea and then drying it, which is called sencha; the other is made by pan-frying the green tea, such as Longjing tea and Zhu tea. Sencha will gradually fade and lose its flavor over time, but stir-fried green tea does not have this disadvantage.