Tea has a shelf life, and different teas have different shelf lives. For example, green tea usually has a shelf life of about one year at room temperature, but the main factors affecting the quality of tea are temperature, light and humidity. If these factors are reduced or eliminated by correct storage methods, the quality of tea can be guaranteed for a long time.
Shelf life of different teas
1, black tea, it is generally considered that brick tea is stored for 10 to 15 years, thousand-two tea is stored for 10 to 15 years, and loose tea is stored for 5 to 10 years, which has high economic and drinking value and is a fine product made of high-grade raw materials. Pu 'er tea can be divided into raw tea and cooked tea. Generally speaking, the shelf life of raw tea is about 5 years, and the cooked tea is more fragrant after special fermentation, and the shelf life of tea is more than 15 years.
2, green tea, green tea shelf life at room temperature is generally about one year. Because green tea has not been fermented, the preservation requirements are higher than other teas, and the shelf life is the shortest. If properly preserved, the shelf life can also be extended.
3. Black tea. Generally, the shelf life of black tea is relatively short, which is 1 year. The shelf life of second-harvested and autumn-harvested black tea is 1-2 years. The shelf life of Ceylon black tea is relatively long, which is more than two years. The shelf life of bulk black tea is generally 18 months, and that of bagged black tea is generally 24 months. Black tea packaged in cans or aluminum foil can be preserved for about three years, and black tea packaged in paper bags can be preserved for about two years.
4, white tea, the shelf life of tea is generally two years, because after two years of shelf life, even if it is well preserved, the aroma of tea has been lost, but white tea is different. Just like raw Pu 'er, the longer it is stored, the more mellow the tea tastes. Known as "one year of tea, three years of medicine, seven years of treasure". Generally, white tea that is five or six years old is considered as old white tea, and it is ten or twenty years old. The longer the white tea is stored, the higher its medicinal value, so the old white tea has great collection value.