How to preserve tea so that it does not deteriorate

The tea purchased at home is usually more expensive, because the more expensive the tea, the stronger the flavor. However, if the tea is not drunk frequently for a long time, it will deteriorate and develop a stale taste. In order to prevent this from happening, the storage of tea is a very critical issue. Only by preserving the tea well can we prevent the tea from deteriorating and avoid drinking unhealthy tea that affects the body's normal digestive function.

method

According to the characteristics of tea and the causes of tea aging and deterioration, theoretically, the best storage and preservation of tea is to keep it dry (water content below 6%, preferably 3%-4%), refrigerated (preferably zero degrees Celsius), oxygen-free (vacuumed or nitrogen-filled), and away from light. However, due to various objective constraints, it is often impossible to have all of the above conditions. Therefore, in the specific operation process, we can grasp the necessary requirement of tea drying, try to slow down the aging process of tea according to the respective existing conditions, and then take some other measures. The storage method of tea in teahouses may refer to the storage method at home.

How to store tin cans

Choose the tinplate double-lid colored tea bowl available on the market as the container. Before storage, check that the can body and lid are airtight and leak-proof. When storing, put the dried tea leaves into cans and make sure the cans are filled tightly. This method is convenient to use, but not suitable for long-term storage.

How to store thermos

Choose a thermos with good thermal insulation properties as the container. Put the dry tea leaves into the bottle, fill it tightly and reduce the amount of air as much as possible. Cover the bottle mouth with a cork, apply white wax to the edge of the cork to seal it, and then wrap it with tape. Since there is less air in the bottle and the temperature is stable, this method maintains better results and is simple and easy.

Ceramic jar storage method

Choose a dry, odorless, sealed ceramic jar, wrap the tea leaves with kraft paper, and place them around the jar. Put a lime bag in the middle, and then put the tea bag on top. After the jar is full, wrap it tightly with cotton. Lime should be replaced every 1-2 months. This method utilizes the hygroscopic properties of quicklime to prevent the tea from getting damp, and has a better effect. It can maintain the quality of the tea for a longer period of time. This method is particularly suitable for some precious teas such as Longjing and Dahongpao.

Food bag storage method

First, wrap the tea leaves with clean, odorless white paper, and then wrap it with a piece of kraft paper. Then put it into a plastic food bag without gaps, squeeze it gently to squeeze out the air in the bag, and then tie the bag tightly with a thin soft rope. Take a plastic food bag, put it on the outside of the first bag, and squeeze it gently to squeeze out the air in the bag. Tie the bag tightly with a rope. Finally, put it into a dry, odorless, sealed iron barrel and store it at room temperature.

Low temperature storage method

Keep the storage environment of tea below 5 degrees Celsius, that is, use a refrigerator or freezer to store tea. When using this method, you should pay attention to the following: for storage period within six months, it is most economical and effective to maintain the refrigeration temperature at 0~5 degrees Celsius; for storage period more than half a year, freezing (-10 to -18 degrees Celsius) is better. It is best to store it in a dedicated refrigerator (freezer). If it must be refrigerated (frozen) with other foods, the tea should be properly packaged and completely sealed to prevent it from absorbing odors. The air circulation in the cold storage (freezer) is good, and the cooling effect has been achieved. When buying a large amount of tea at one time, it should be divided into small bags (cans) and then placed in the cold storage (freezer). Take out the required brewing amount each time. It is not advisable to freeze and thaw the same bag of tea repeatedly. When taking out tea leaves from a cold (freezer) storage, the temperature of the tea leaves in the tea can should be allowed to return to room temperature before taking out the tea leaves. Otherwise, if the tea can is opened suddenly, the tea leaves will easily condense water vapor and increase the water content, causing the unbrewed tea leaves to deteriorate faster.