The difference between new tea and fresh keeping tea, the difference between new tea and aged tea

The first is to look at its color. The color of green tea is verdant and turquoise, and the color of the soup is yellow-green and bright; The black tea is dark in color, and the soup color is red and orange, which is the sign of new tea. In the process of tea storage, some substances that constitute the color of tea will be slowly decomposed or oxidized under the action of light, gas and heat, such as the decomposition and oxidation of chlorophyll in green tea, which will make the color of green tea become gray and dull, and the increase of theabrownin will make the color of green tea soup become yellow-brown and lose its original fresh color; When black tea is stored for a long time, the tea polyphenols in the tea will be oxidized and condensed, which will make the color become gray, and the increase of theabrownin will also make the soup color turbid, and it will also lose the freshness of the new black tea.

The second is to smell its fragrance. Scientific analysis shows that there are more than 300 kinds of components that constitute 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, with the extension of time, the aroma of tea will change from strong to light, and the fragrance will change from the fragrance of new tea to low and turbid.

The third is to taste its taste. Because in the process of storage, the phenolic compounds, amino acids, vitamins and other characteristics in the tea constitute the taste characteristics, some decompose and volatilize, and some condense into insoluble substances, so that the effective taste substances that can be dissolved in the tea soup are reduced. Therefore, no matter what kind of tea, the taste of Dafan new tea is mellow and fresh, while the old tea is light and unpleasant.

The ancients had a motto: Hope. Sniff. Ask. Infuse.

New tea needs to be stored at room temperature for a period of time, and then put it in the freezer to freeze it, so that the preservation effect is good. Some tea leaves are fried at high temperatures, and if they are stored directly in the refrigerator, they cannot get rid of the fire of the tea.

If you want to preserve the color and aroma of new tea for a long time, it is best to seal it in a packaging bag and put it in a tea can, and then store it in the freezer of the refrigerator, which is the best preservation effect.

Tea can also be stored in a thermos, choose a thermos with good thermal insulation performance, put the tea in it, and then cover it tightly with a very soft stopper, and then we will apply the white wax on it, and then wrap it with adhesive tape, so that the air in the bottle is less.

Tea can also choose iron cans to preserve, use iron cans like cans or open sails to hold tea iron utensils for loading, preservation, can not use leaking iron cans, if not tightly covered, must be closed, if it is rotten we don't want to use Jian Tong, if it is loaded, we must pay attention to the hail solid, air leakage is very bad.

Tea can also choose to be stored in a food bag, choose a clean and hygienic white paper to wrap the tea first, and then wrap a layer of kraft paper on the outside and tie the mouth tightly, so that the tea can be preserved.

The difference between new tea and old tea is that the color and aroma are different.

Color is an important factor in judging new tea, and the color of new tea is generally fresh and fresh, pleasing to the eye. Green tea is preferably green, tender green, and oily. The color of some tea leaves is withered, dark and brown, indicating that the inner quality of the tea leaves has different degrees of oxidation, and this kind of tea is often aged tea.

The new Jianda tea generally has a high and refreshing new tea aroma, a good new tea, and the tea fragrance is particularly obvious. Like new green tea, it smells of tender fragrance, fresh fragrance, floral fragrance, fruity fragrance, sweet fragrance, milli fragrance, chestnut fragrance, etc. Good tea is a regional fragrance with the characteristics of Xian's previous works.

If it is aged tea, the aroma is weak, sluggish and not easy to be felt by the nasal cavity, there is a depressed atmosphere, or there is an obvious old smell.

How to make tea.

1. Choose the right tea set.

Green tea and yellow tea are relatively delicate teas, which cannot withstand high temperature simmering, and are suitable for using glasses, which is convenient to observe the state of tea leaves stretching in water, which can not only brew fresh tea soup, but also make people pleasing to the eye. For black tea and oolong tea, you can use a porcelain bowl, which will not absorb the fragrance of the tea leaves, and is easy to observe the tea soup.

2. Warm cup sanitary ware is indispensable.

Before starting to make tea, blanch the tea set with boiling water, which can play a role in disinfection, remove odors, and be clean and hygienic. At the same time, there is residual residual temperature on the scalded tea set, which can make the aroma of the tea more fragrant and the tea taste more pure after the tea is thrown.

Tea leaves are refrigerated to keep them fresh.

Tea has strong adsorption and is easy to absorb odors in the air, so it is necessary to pay attention to moisture, mildew and odor when preserving. There are some teas, such as green tea, fragrant oolong tea, etc., which have a low temperature and a long shelf life.

Tea leaves in the air are affected by factors such as moisture, dryness of tea, and ambient humidity, temperature, oxygen, and light, and a series of complex chemical reactions occur. Therefore, in order to maintain the characteristics of tea, it is necessary to avoid the influence of the above factors on tea.

Refrigerated storage in the refrigerator can greatly prolong the life of tea, delay the deterioration rate of tea, which is conducive to quality preservation, and the general storage temperature is below 5. Traditional oolong tea, black tea, white tea, and Pu'er tea can be stored without being stored in the refrigerator. Low temperatures inhibit the aroma of tea.

Precautions for preserving tea leaves

1. Refrigerator refrigeration: This method is the most common and practical in general families, put the tea in a fresh-keeping bag, seal it, and then put it in the refrigerator for refrigeration. However, you must be careful when storing and avoid storing it with other foods, otherwise it will cause the tea to absorb the taste of the food and change its taste.

2. Purple sand clay pot and simple jujube: Take a purple sand clay pot, wrap and seal the tea leaves with film paper, then put it in the purple sand clay pot, and cover the lid of the purple sand clay pot. Preserving tea leaves in this way is relatively sealed, which is very practical and convenient.

3. Stainless steel iron can: Pack and seal the tea leaves with plastic wrap, then put them in a stainless steel iron can, and close the lid tightly. The sealing effect of this preservation method is also relatively good, which can well preserve the nutrients of tea.

4. Glass jar: You can rent and dismantle the supermarket to buy a large glass tea jar to store tea, which is also the simplest and most practical way to preserve tea. The special tea canister lid is surrounded by a rubber ring, which is difficult for air to enter, which ensures the sealing degree of the tea to a large extent.

5. Foam box: If you need to save a lot of tea, it is most practical to use a foam box to preserve. Prepare the foam box and take some quicklime cubes and place them in the corner of the box. Then seal the tea leaves, put them in a foam box, and cover the lid.