Will black tea expire after being stored for a long time, and can it still be drunk after expiration

The "shelf life" of tea has always been an ambiguous topic, all agricultural products have an expiration date, and tea is no exception. The shelf life of tea is related to the variety of tea, and the shelf life of different teas is also different. Generally, the shelf life of green tea and yellow tea is generally 18 months; On the packaging of black tea and oolong tea, the shelf life of printing is 2 or 3 years; The packaging of black tea, pu-erh tea, white tea, and tangerine peel pu-erh is basically printed with words similar to "can be stored for a long time under the right conditions".

"Expired" ≠ "spoiled".

Just because the tea leaves have passed their expiration date does not mean that the tea leaves have gone bad. It can be said that for the best tasting effect, it is best to drink within the expiration date. However, there are also many teas that slowly transform with proper preservation and take on a unique flavor over the years.

Therefore, the key to the quality of tea is to look at preservation, well-preserved old tea will also be delicious, and poorly preserved tea may also deteriorate before the expiration date.

How can you tell if tea has gone bad?

Drinking green tea mainly lies in the word "fresh". Green tea has high requirements for preservation, and if it is not stored properly, it will turn yellow, and the aroma and taste will be greatly reduced after yellowing. How to tell if tea is expired?

It mainly depends on these aspects: first of all, see whether the tea leaves have a peculiar smell or mold, whether the green tea leaves turn red, and whether the soup color has changed to brown or very dark. I don't feel anything about the taste, concentration, or freshness of the drink.

If it is loose tea, it is best not to leave it for more than 18 months before drinking, bulk tea is easy to deteriorate without packaging and preservation.

Tips for storing green tea.

1.Sealing: The preservation of green tea is generally based on clay pots, porcelain jars or tin pots, and the sealing must be done to isolate the air and reduce the invasion of air, otherwise the tea is easy to deteriorate if it is not stored properly.

2.Environment: The sealed tea container should not be placed in a place that is exposed to the sun, high temperature or humidity. Also, avoid strong odors such as cosmetics, cigarettes, detergents or medicines.

3.Less opening: It is best to buy small packages for tea to store separately to reduce the number of times the package is opened and prevent contact with air.

What can you do with green tea when it expires?

Boil tea eggs. Put it in a pillow.

Soak your feet. Deodorization.

Smoked meat, smoked fish. Ingredients for stew.

Black tea will not expire after being stored for a long time. Because the longer the tea is stored, the more mellow the taste, of course, the place where it is stored should not be damp, otherwise it will become moldy.

I think that black tea will expire after a long period of storage, and it is best not to drink it after expiration, because the expired tea leaves do not have any nutrients, even if we drink it into the body, it will not have any benefit to our body.

Black tea has a shelf life, the shelf life of black tea is generally about one year, black tea will expire after a long storage time, do not drink expired black tea, drinking it will affect your health.

Black tea can no longer be drunk after it has been stored for a long time and expires, because the tea is compressed after artificial processing.

If your storage environment is in line with: no peculiar smell, clean, dry and not damp, then smell the tea to see if there is any peculiar smell, and then suitable for the tea soup to taste musty, if there is, don't drink it again.

Black tea has a shelf life, generally can be stored for 18 months, some vacuum-packed black tea can be stored for 3 to 5 years, the process of black tea storage should be cleaned up and should do a good job of shading and moisture-proof measures, so as not to affect the preservation time of tea, in addition to brewing overnight tea is not drinkable, so as not to cause physical discomfort.

months

Black tea has a shelf life, the shelf life is generally about 18 months, sealed black tea can be stored for 24 months, some charcoal roasted black tea can only be stored for 6 to 12 months, and black tea can be stored for 3 to 5 years using tin foil.

2. How to save it

The specific preservation time of black tea is related to the method of storing the smile, the tea should be kept away from direct sunlight in the process of preservation, so as not to change the substances, and it needs to be kept away from high temperatures, it is best to put it in the refrigerator for refrigeration, or put it in a vacuum bag for preservation. Bump and call.

3. Precautions

Black tea can not be left for too long after brewing, let alone drunk overnight, the nutrients in the tea will breed a large number of bacteria and harmful substances in the air, which is not conducive to human health after drinking, so it is best to drink the tea after brewing within 30 minutes.

It has an expiration date and cannot be drunk, and black tea and pu-erh tea are both fermented teas, so many people think that black tea can also be stored for a long time. In fact, if black tea is stored for too long, the quality will be greatly reduced, the aroma will be weakened, the soup color will deteriorate, the taste will not be so strong and pure, and even moldy and deteriorated.

The shelf life of bulk black tea is now generally 18 months, and the shelf life of black tea in sealed bags, cans, or aluminum foil can be up to 24 months. However, if you don't pay attention to preservation after buying it, it will accelerate the deterioration of black tea.

Pay attention to the following points when purchasing and storing:

1. The water content should be lower.

Studies have shown that the optimal water content of tea storage is 3%, and when it reaches more than 6%, the deterioration of tea leaves is quite obvious. Therefore, when buying black tea, especially bulk products, you should pay attention to the water content, if you rub it gently with your fingers, the tea leaves will immediately become powdery, indicating that the water content is within 6%, which is suitable for preservation; If you can only roll it into a flake shape, it is best not to buy it.

2. Store in a dry environment.

Tea is a highly hygroscopic food, and Lin Zhi recommends storing black tea in a dry place to prevent mildew. In order to remove the moisture in the tea, some people spread it out under the scorching sun to dry, which damages the quality of the tea and is easy to lose its due color, fragrance and taste. In addition, high temperatures and exposure to air will speed up the oxidation process of tea, so it is recommended to seal it with aluminum foil or a clean iron can and store it at low temperatures.

The above content reference: People's Daily Online - Black tea also has a shelf life: sealed cans are easy to store, and the environment is dry to prevent mildew.

This question depends on the situation.

Many people think that the expiration date is the period during which quality can be guaranteed. And once it expires, the black tea will spoil and should be thrown away. But in real life, some tea lovers have found that after drinking expired black tea, there is nothing abnormal in the body.

In fact, it is everyone's concept of shelf life that has deviated and led to misunderstanding. The reasons for the deterioration of black tea are related to many conditions, such as too long storage time, too high storage temperature, high humidity, and heavy odor. All kinds of factors may affect the quality of black tea.

Therefore, if you don't pay attention to these details, even within the expiration date, black tea is still at risk of spoilage.

Moreover, the deterioration of tea is a gradual process, not overnight. So, to be more precise, the expiration date actually refers to the best time to drink.

Tea lovers who love black tea should find that the shelf life indicated on the package is usually about 2-3 years. During this time, the quality of black tea is more stable, and the aroma and taste can be maintained in the best state. After the expiration date, although it does not mean that the black tea is 100% spoiled, it is difficult to guarantee that the flavor it presents is the best.

In addition, black tea does not have the characteristics of becoming more fragrant the more it is stored.

As for whether black tea can continue to be drunk after expiration, everyone's opinion is different. Some people think that as long as it is not spoiled and moldy, they can continue to drink it. Some people also believe that if the aroma and taste of black tea become weaker, less flavorful, and out of breath, they should not continue to drink it.

The criteria are different, and the choices are naturally different. However, if you find that the black tea exudes a strange smell, musty smell, or has obvious mildew, you must not drink it again.

Black tea should not be drunk after expiration to avoid health hazards.

The degree of dryness of the tea leaves is very high, and the preservation and sealing method is also very scientific, the shelf life of this tea is generally very long, if it is not opened, the tea is not damp, and it can be drunk before expiration.

But some tea itself is relatively dry, and often placed on a relatively humid tea table, it is easy to absorb water and get damp, this kind of tea will deteriorate relatively quickly, if it exceeds the shelf life, the nature of the tea has changed, then don't drink it, health first.

Black tea can no longer be drunk after expiration.

Black tea is the young leaf or bud of the camellia family. Black tea is not naturally grown, but made in the late Ming and early Qing dynasties on the basis of green tea. Black tea is a tea refined from suitable tea tree sprouts and leaves through a series of processes such as withering, rolling, fermentation, and drying.

The originator of black tea is in China, and the world's earliest black tea was invented by tea farmers in the Wuyi Mountain Tea District of Fujian during the Ming Dynasty in China, named Zhengshan Xiaozhong. Black tea is produced in China, India, Sri Lanka and other countries. Black tea was originally a unique tea drink of the Orientals, and later spread to Europe and became a favorite tea for princes and nobles.

Black tea is highly praised by people, and people love to drink black tea.

Types of black tea

1. Tanyang Gongfu black tea.

Tanyang Gongchang Pai sedan chair black tea is the first of the three major moments of black tea in Fujian, which is widely dispersed, and is mainly produced in Fu'an, Zherong, Shouning, Zhouning, Xiapu and northern Pingnan. Tanyang Gongfu dry tea is tightly knotted, black and golden. The typical aroma of Tanyang Gongfu black tea is potato aroma, as well as a bit of medicinal aroma and high-grade bud tea.

The aroma of Tanyang Gongfu black tea is relatively elegant.

2. Bai Lin Kung Fu Black Tea.

Bailin Gongfu black tea is one of the three major moments of Fujian red tea, originated in Fuding Bailin Town, located in the foothills of Fuding Tailao Mountain, the tea tree of Bailin Gongfu is the local excellent variety of Fuding Dabai tea and Fuding Dahao tea. The appearance of Bai Lin Kung Fu Black Tea is tight and delicate, containing many durable orange and yellow white hao, with a fresh and pleasant fragrance, and the bottom of the leaves is beautiful and red.

Black tea will expire.

The shelf life of black tea in regular bulk is generally 18 months; Black tea in sealed bags has a shelf life of up to 24 months. Black tea can be stored in sealed cans or wrapped in aluminum foil for 2 to 3 years. In addition to this, the shelf life of black tea is also related to the process in which it is made.

If black tea is made by the traditional charcoal roasting process, its shelf life can be increased by 6 to 12 months, which is the shelf life of 3 5 years.

How to tell if black tea has gone bad

1. Look at the color of dry tea: The tea leaves in the new tea stage, because the production has just been completed, the dry tea is more complete and the color is more vivid, giving people sufficient freshness, especially green tea. If the tea leaves are expired or over-aged, the color of the dried tea will be dull and have no luster.

Generally speaking, after the aging of green tea, there will be a significant change process in the color of dried tea.

2. Smell the aroma of dry tea: The aroma of tea leaves within the normal range will be relatively fresh and natural, with obvious type characteristics, such as floral aroma, fruity aroma, etc. Tea leaves that are improperly stored or stored for too long are prone to rotten, musty, and miscellaneous smells, and smell very uncomfortable.

3. Feel the humidity of dry tea: if the dry tea can be easily broken and pinched into powder, it means that the moisture content is within a controllable range. If it can't be broken easily, and there is a feeling of wetness, the moisture content of the tea is high.

The above content refers to Encyclopedia - Black Tea.

The shelf life of black tea in bulk is generally 18 months, and the shelf life of black tea in sealed bags, cans, or foil packaging is 24 months. Tea should be kept away from humidity and high temperatures, and should not be stored together with detergents, spices, soaps, etc., to maintain the purity of tea. It is best to put it in a tea can, move it to a dark, dry place to preserve, and it is best to drink the tea as soon as possible after opening, otherwise the taste and aroma will be lost, and different tea leaves should not be mixed to drink, so as not to be able to appreciate the original taste of the tea.

The most famous black tea variety in China is Qimen black tea, which is the second largest tea category in China. Black tea is a fully fermented tea, which is refined from a series of technological processes such as withering, rolling, fermentation, and drying with suitable tea tree new tooth leaves as raw materials.

Because the chemical reaction centered on the enzymatic oxidation of tea polyphenols occurred during the processing of black tea, the chemical composition in the fresh leaves changed greatly, and the tea polyphenols were reduced by more than 90%, producing new components such as theaflavins and thearubigins. The aroma substances were significantly increased compared with fresh leaves. Therefore, black tea has the characteristics of black tea, red soup, red leaves, and sweet and mellow.

The main varieties of Chinese black tea are Qi Hong, Su Hong, Hu Hong, Sichuan Hong, Ying Hong, Yunnan Hong, Huo Hong, and Zhaoping Hong. Among them, Keemun black tea is the most famous. Ninghong Gongfu is produced in the Xiushui area of Jiangxi Province and is one of the earliest Gongfu black teas in China.

The above content refers to Encyclopedia - Black Tea.

Black tea will expire. The shelf life of black tea is not long, most of them are around 1 year; The shelf life of the second pick and the autumn harvest is 1-2 years; The shelf life of Ceylon black tea will be about 2 years longer.

How to preserve black tea.

Iron can storage method.

Before storing black tea, first check whether the body and lid of the can are closed and cannot leak. When storing, the dried tea leaves should be canned, and the cans should be tightly packed. This method is convenient to use, but it is not suitable for long-term storage.

Cryogenic storage method.

In our daily lives, we put the things we buy in the refrigerator to maintain their freshness, and tea leaves can actually be stored in the refrigerator. When stored in the refrigerator, it is necessary to seal the package, so that the odor and moisture in the refrigerator will not be absorbed by the tea. At the same time, it is best not to keep it too long, and try to drink it as soon as possible.