Odor

According to the storage conditions for Pu'er tea, it should not be stored in sealed packaging. This is because Pu'er tea undergoes post-fermentation, and during its storage, there is an ongoing transformation process within the tea leaves. Tea polyphenols react with active enzymes through oxidation. This allows beneficial bacteria to reproduce quickly while killing harmful bacteria. This process requires the presence of oxygen and cannot occur in a vacuum. Therefore, if you want Pu'er tea to transform well over time, it must not be stored in a sealed environment. However, due to environmental limitations, many individuals storing tea at home do not have suitable conditions for tea storage and can only choose to store Pu'er tea in sealed bags. So, is it good to store Pu'er tea long-term in a sealed bag? How to Store Pu'er Tea at Home The main issues when storing Pu'er tea at home are moisture control and preventing odors. Do you have any good methods to address these? Please share them in the comments section: In most cases, many households lack professional equipment and dedicated spaces for tea storage, making it difficult to manage moisture and odors effectively. However, personal tea storage at home can…

Pu'er tea is an agricultural product, and theoretically, all agricultural products have an expiration date. After the expiration date, the internal components of the tea are oxidized, losing their taste and aroma. There isn't a definitive time limit for the specific expiration date of Pu'er tea. Does Pu'er Raw Tea Have an Expiration Date? Pu'er raw tea: The expiration date and optimal tasting period are generally 10 to 20 years. Pu'er raw tea has rich internal qualities, so it transforms during storage and can be preserved for a long time. Pu'er ripe tea: The expiration date is typically 8 to 15 years. Ripe tea has more stable properties compared to raw tea and can still be stored for a long time, albeit for a shorter duration. For personal or household storage of Pu'er tea, basic requirements include "avoiding light," keeping in a cool place, ensuring there is no odor or pollution, proper ventilation, and avoiding excessive humidity. If possible, individuals or households should have a dedicated "tea storage room" or "tea cabinet." Avoiding light includes not only direct sunlight but also artificial lighting. Pu'er tea should be stored under "natural light." The tea should not be directly exposed to sunlight…

When storing tea, attention should be paid to avoiding light exposure, moisture, odors, and high temperatures. Exposure to sunlight can cause chlorophyll in the leaves to fade, darkening the color of the tea, so care should be taken to avoid light; in damp places, tea is prone to mold, so attention should be given to moisture control; tea has a strong adsorption capacity and can easily absorb odors from other objects, altering its aroma, so care should be taken to avoid odors; additionally, high temperatures can accelerate the degradation of tea, so it's important to avoid high temperatures. What Influences Should Be Noted During the Storage of Tea? I. Green Tea Storage Method: Refrigerate. If you need to store for a short period and want to drink it at any time, place green tea in the refrigerator and set the temperature to around 5°C. If the tea is unopened and you want to preserve it for over a year, then store it in the freezer. Best Time to Drink: Within 1-2 months after opening, or within one year if unopened. Points to Note: 1. You can use quicklime to absorb moisture from the tea, package it in an aluminum composite…

Tea does have an expiration date, which varies depending on the type of tea. If stored properly, tea not only remains fresh but can even improve in quality. Different types of tea require different storage methods. Green tea is best stored in cans with sealed refrigeration; black tea should be kept in airtight and dry containers; Oolong tea can be stored at room temperature in double-lidded containers such as tin or iron cans. How should tea be stored? During the process of storing tea, enthusiasts try every possible method to preserve its quality for as long as possible. Today, we will briefly introduce some tea storage methods that may be helpful to you. 1. Refrigerator Storage Place the tea in a container that is both dry and odor-free, then seal it and put it in the refrigerator's chill compartment. If the amount of tea is small and very dry, it can also be directly packaged and sealed using two layers of moisture-resistant film bags before being stored in the refrigerator. 2. Canning Storage Fill a double-lidded tin can with tea, ideally to capacity so there is little air inside, which helps prevent spoilage. Ensure both lids are tightly closed and…

As a post-fermented tea, Puer tea's rich internal components change over time. Many Puer tea enthusiasts store substantial quantities at home. How long Puer tea can be stored depends on its storage conditions; it could be as little as a few years or as much as several decades. When storing Puer tea, it is essential to note: 1. Avoid direct sunlight exposure, as it can impart an unpleasant sour taste. 2. Prevent any external water intrusion, as this can lead to too rapid maturation and possibly microbial fermentation, causing undesirable changes in quality. 3. Keep the tea away from any foreign odors that might taint its flavor. 4. Store single varieties together to avoid complicating the monitoring of their condition. 5. When removing tea for use, take enough for your needs to minimize disturbance and make it easier to monitor the tea's condition. Puer tea is a post-fermented tea that becomes more fragrant with age when stored under suitable conditions. However, those who have stored loose Puer tea for a while may notice that the originally enjoyable flavor changes over time, becoming bland or even acquiring off-flavors, failing to develop the characteristic of improving with age. This is because loose…

Pu'er tea can be stored long-term and becomes more fragrant with age. However, black tea is different from Pu'er tea as it has a specific shelf life. Storing it for too long will cause the tea's aroma to dissipate, which in turn affects the taste of the infusion. In other words, black tea generally does not have significant value for collection. So how long is the shelf life of black tea? This depends on the packaging of the black tea. Generally, canned black tea has a shelf life of 2 years, sealed bagged black tea lasts 1 to 2 years, and loose black tea has a shelf life of 18 months. However, if stored properly, it can last longer. Regardless, to enjoy the purest flavor of black tea, it is recommended to consume it within its shelf life. How to Store Tea? In any case, once tea is opened, it should be stored promptly. Common methods used at home include canning storage and bagged storage. Canning storage is a widely adopted method in many households mainly because it is very convenient. However, many people often overlook a detail: tea easily absorbs odors, so if the can itself has an odor,…

Black tea has a shelf life of 2 to 3 years. Due to its high degree of fermentation and delicate texture, black tea is easier to preserve than other types of tea but should not be stored for more than three years. To store black tea, place the tea in an aluminum foil bag, fold it over to seal it properly, and then store it in a clean, odor-free refrigerator. Does black tea have a shelf life? How long can it typically be kept? Black tea is one of the six major types of tea and has a specific shelf life. If stored well, it can be preserved or remain fresh for 24 to 36 months. Black tea is a fully fermented tea, so the substances within the leaves are relatively stable, making it easier to preserve, with a longer shelf life compared to green tea. When storing, seal the black tea in an aluminum foil bag and metal tin, and store it in a cool, dry place away from odors. How to store black tea Method One: The moisture content of dried black tea leaves is low, so they are highly absorbent and easily lose their aroma. Therefore, a…

The suitable temperature for storing tea is between 0 and 25°C. According to national standards, the storage temperature for green tea and yellow tea should be between 0 and 10°C, while black tea, oolong tea, dark tea, and white tea should be kept at temperatures no higher than 25°C. It is important to note that both excessively high or low temperatures can affect the quality of the tea. In addition to temperature, other factors to consider include avoiding light exposure, maintaining a normal room temperature, ensuring airtight seals, preventing dampness, and guarding against odors. 　　Suitable Temperature for Storing Tea The temperature requirement for storing tea is 0 to 25°C, with a relative humidity below 50% to 70%. Green tea: The storage temperature should ideally be controlled below 10°C, with a relative humidity below 50%. Black tea: Should be controlled below 25°C, with a relative humidity below 50%. Oolong tea: Should be controlled below 25°C, with a relative humidity below 50%. Yellow tea: Should be controlled below 10°C, with a relative humidity below 50%. White tea: Should be controlled below 25°C, with a relative humidity below 50%. Dark tea: Should be controlled below 25°C, with a relative humidity below 70%. Tea…

It is now the hottest time of the year, and most regions in the south have entered a hot and humid state. At this time, tea enthusiasts who have tea in their possession will face a severe challenge of storing tea during the summer. As we all know, tea leaves are very susceptible to environmental influences, and the requirements for storing tea are extremely strict. Especially with Pu'er tea, if stored well, it can become more fragrant over time and have collection value; if not stored properly, the tea can spoil, losing its drinking value and causing significant economic losses for individuals or businesses. Understanding the principles of tea transformation before storing tea is crucial for scientific storage. Factors Affecting Tea Transformation or Spoilage In fact, the transformation of tea leaves is directly related to temperature, humidity, oxygen, and light. Generally, the higher the temperature, the greater the humidity, the more sufficient the oxygen, and the stronger the light, the faster the oxidation, hydrolysis, polymerization, and other chemical reactions of the substances within the tea leaves will occur, resulting in a quicker change in taste components. Temperatures that are too high or too low are not conducive to the transformation…

Tea, the national drink, is a natural beverage that has been passed down through thousands of years of Chinese history. Since ancient times, there has been the saying "Firewood, rice, oil, salt, soy sauce, vinegar, and tea," and to this day, tea remains an essential part of our daily lives as Chinese people. The correct method of storing tea leaves is crucial for maintaining their freshness, aroma, and quality. How should we store tea in our daily lives? This article will provide you with detailed answers. 01. Choose the Right Container Select a container that is well-sealed and opaque to store tea leaves. Clean the inside of the container with saltwater or warm water mixed with a small amount of white vinegar to remove any residual odors and impurities. Rinse it thoroughly with clean water and allow it to dry completely. 02. Avoid Mixing Different Types Different types of tea should be stored separately to prevent them from affecting each other. For example, the storage conditions and requirements for green tea and black tea differ, and mixing them can lead to a decline in quality. 03. Control Temperature and Humidity The storage environment for tea should maintain appropriate temperature and…

There are several methods for storing Pu'er tea at home, such as in ceramic jars, tin cans, leather paper bags, cardboard boxes, purple clay pots, aluminum foil bags, or in their original packaging. When storing, it's important to ensure they are sealed, kept dry, out of direct sunlight, and away from odors. For single cakes of Pu'er tea, you can use aluminum foil bags to seal them. For multiple cakes, pack them in leather paper bags and place them in a cardboard box, then seal the box. How to Store Pu'er Tea at Home? 1. Tea easily absorbs odors, so store it away from kitchens, bathrooms, and areas where cosmetics or medicines are kept. 2. Choose a location that is not prone to dampness. Once tea becomes damp, it can easily develop mold. In mild cases, this may result in a storage flavor that alters the taste; in severe cases, it can produce an unpleasant musty odor, rendering the tea undrinkable. If the tea gets damp and you catch it early, you can air it out in a well-ventilated area or sun-dry it until it is dry. However, if the tea has already developed significant mold, no matter how good…

Pu'er tea's characteristic of improving with age attracts many tea enthusiasts to collect it actively. In the tea storage market, Pu'er tea is a hot favorite, with many people enthusiastic about buying and selling it. Collecting tea is a good thing, but the current market is mixed with both good and bad, making it easy for novices to fall into misconceptions. A Brief Discussion on Misconceptions in Pu'er Tea Collection1. Blindly Pursuing Age: Pu'er tea does indeed improve with age, and because of this characteristic, older teas are highly sought after. Pu'er teas that have been stored for a long time are expensive and rare, and some unscrupulous merchants take advantage of this by passing off teas that are only one or two months old as aged teas.2. Blindly Pursuing Storage Time: Pu'er tea can be stored for a long time, but this doesn't mean the longer the better. If stored for too long, the tea will over-age, greatly reducing its flavor, and may even become as tasteless as water. Sacrificing the taste of the tea for long-term storage is not worth it.3. Blindly Pursuing Famous Mountain Teas: Famous mountain teas are like aged teas – they are valuable because…

Liubao tea, Anhua dark tea, raw Pu'er tea, ripe Pu'er tea, and Fuding white tea can be stored for a long time. These teas are post-fermented or aged over time. They contain abundant pectin, sugars, amino acids, etc., and require time for enzymatic reactions. As they age, their aroma becomes richer, making them suitable for long-term storage. Which Teas Are Suitable for Long-Term Storage? 1. White Tea White tea is often referred to as "a one-year tea, three-year medicine, seven-year treasure." Storing white tea helps transform its fresh, sweet flavor, increasing its sweetness and developing aromas like jujube and medicinal herbs, with a clear, sweet taste. White tea aged for more than three years has a gentler nature, making it very suitable for people with weaker spleen and stomachs to drink. 2. Pu'er Tea Both raw and ripe Pu'er tea can be stored for a long time, but raw tea has greater storage value. Stored in different environments, Pu'er tea undergoes changes in different directions, which is extremely intriguing. The longer the storage time, the richer the layers of taste and the stronger the flavor. 3. Dark Tea Storing dark tea benefits the further transformation by beneficial bacteria, making the…

One of the key factors in storing white tea is avoiding exposure to light, which means keeping the tea boxes out of direct sunlight. However, with seasonal changes and fluctuations in weather, a momentary oversight can allow sunlight to penetrate and potentially spoil the stored white tea. To properly store a box of tea, several steps need to be followed. 01 How to Keep White Tea Away from Light and Heat at Home? To store white tea well, it must be kept away from light and heat. After being sealed layer by layer with aluminum bags, plastic bags, and cardboard boxes, the tea needs to be stored in a dry, cool, and dark environment for better aging. The thermal energy in light can damage the nutrients and flavor of the tea, compromising its original color, aroma, and taste. Additionally, the storage environment should remain cool and dry. Considering the need for dark storage, containers that let light through, such as glass jars and PVC cans, are not suitable for holding tea. To ensure that the white tea within the box is not disturbed or damaged by light, it is generally not recommended to store the tea on the top floor,…

Puer tea does not need to be stored in the fridge, as the high humidity and low temperature within a fridge, along with its sealed environment, make it more susceptible to dampness and odor absorption, which is detrimental to enzymatic activity. Puer tea is a post-fermentation tea that improves with age under proper storage conditions. Puer Tea: Should It Be Stored in the Fridge? Puer tea does not need to be stored in the fridge, as the high humidity and low temperature within a fridge, along with its sealed environment, make it more susceptible to dampness and odor absorption, which is detrimental to enzymatic activity. Furthermore, puer tea is a post-fermentation tea that requires air and temperature for its substance conversion. Therefore, under normal circumstances, storing it at room temperature, in a well-ventilated and dry environment is sufficient. What Types of Tea Need to Be Stored in the Fridge? Green tea, floral teas, yellow tea, and lightly fragrant oolong tea should be refrigerated. These types of tea undergo minimal or no fermentation, making their internal substances highly reactive to oxygen and environmental factors. Storing them in the fridge helps isolate them from external influences and maintains their stability. However, when…

Pu'er tea values its vintage, and many enthusiasts are passionate about collecting and drinking aged teas. When it comes to the vintage of Pu'er tea, storage is a natural topic of discussion. Besides raw materials and processing techniques, proper storage is crucial in determining the quality of Pu'er tea, ensuring it improves with age. Some tea merchants can establish professional facilities to store Pu'er tea, controlling factors such as humidity and temperature to ensure optimal aging conditions. However, for most merchants and enthusiasts, such professional storage is not feasible, and they must rely on natural conditions. Under these circumstances, the transformation and quality of Pu'er tea are largely determined by the natural climate. Natural storage of Pu'er tea essentially means dry storage. By "dry storage," we mean a clean and relatively dry environment. Cleanliness is the priority, with moderate dryness! The aging process of Pu'er tea requires both humidity and temperature. Extensive practice and scientific research have shown that the transformation of Pu'er tea involves enzymatic reactions and microbial fermentation, leading to changes in taste. Microorganisms, referred to as beneficial bacteria, play a key role in this transformation. These beneficial bacteria and enzymatic reactions thrive best at temperatures around 20°C…

How to prevent tea from aging and deteriorating: Do well in preventing pressure, dampness, sealing, avoiding light, and preventing odor. Green tea is suitable for canning and sealed refrigeration; black tea needs to be stored in a tightly closed and dry container; Oolong tea can be stored at room temperature using double-lid cans such as iron or tin cans; white tea requires a well-sealed tin or iron can for storage; Pu'er tea should be stored with cotton paper in a normal temperature environment without any odor. How to Better Prevent Tea from Aging? 1. Control of moisture content in tea: The safe moisture limit for tea is below 5%. For coarse tea, if it undergoes one short-term high-temperature drying, it may not achieve complete and sufficient drying, so two-stage drying is more ideal. Freshly dried tea needs to cool down before being bagged, but this cooling time should not be too long to avoid re-moistening; after the coarse processing, picking out stems and dust, the tea must be dried again to ensure that the moisture content is less than 5%. 2. Avoid light exposure. Experiments have shown that light is the most intense and rapid factor leading to deterioration of…

Dry-warehouse Pu'er refers to Pu'er tea stored in a dry, ventilated environment with low humidity. Generally, dry-warehouse tea ferments and ages under conditions of moderate temperature and humidity, good ventilation, and a clean, odor-free environment. This natural aging process preserves the true nature of Pu'er tea and enhances its value for connoisseurship. The characteristics of dry-warehouse Pu'er tea Smell the tea leaves by lifting the tea cake. Good storage conditions produce Pu'er tea with an excellent aged aroma. If there are other miscellaneous odors, it indicates that the tea has absorbed other scents during storage. If you detect a watery smell, the tea must have been stored in a humid environment. If you notice a pungent odor, the tea has likely molded; aged tea should not have a pungent smell as it becomes milder over time. Brew a portion of the tea to taste. The liquor from dry-warehouse Pu'er tea is clear and bright, not murky, with a slight initial bitterness or astringency that quickly dissipates. If the liquor is murky, it is definitely not high-quality tea. Inspect the infused tea leaves. Dry-warehouse Pu'er tea leaves have a yellow or deep fruit color, are relatively intact, soft, and strong with…

Pu'er tea, due to its post-fermentation characteristics, is not as picky about storage conditions compared to green teas, especially premium ones that require sealed, shaded, and low-temperature storage. For everyday home storage of Pu'er tea in small quantities, there's no need to be overly meticulous; the main considerations are a clean environment, absence of odd odors, shade, ventilation, and dryness. However, if storing larger quantities, attention should be paid. After all, it would be a shame for perfectly good Pu'er tea to suffer in flavor due to improper storage. So, how do you store Pu'er tea at home? Do you know? 1. Conditions for Storing Pu'er Tea at Home 1. When storing Pu'er tea, the tea itself needs to be relatively dry. Professional experimenters have found that tea samples with a moisture content of 9% are best stored under these conditions, which can serve as a reference point. However, not everyone has access to the tea's moisture content, so buying from reputable tea companies is a reliable option. 2. Avoid excessively high relative humidity. Professional studies suggest that an average humidity level of 65% can maintain the tea's moisture content. Generally, humidity levels below 75% (high humidity) can be considered…

Pu'er tea is most intriguing due to its transformation, from raw to ripe, from new to aged, constantly evolving and painting a rich landscape of the Pu'er world. We often see the results of this transformation easily, such as the change in infusion color to orange-red or the emergence of plum, fruity, and woody aromas. But where do these flavors come from? What changes are occurring within the Pu'er tea? Let’s take a look together. 1 Dry Matter Loss During storage, there are many reasons for dry matter loss in Pu'er tea. Pu'er tea consumes oxygen and releases carbon dioxide; some proteins and amino acids deaminate and release ammonia; pectic substances decompose and release methanol; certain organic acids are oxidized and release carbon dioxide, among other reactions. In the storage process, hydrophilic colloids in Pu'er tea undergo decomposition. The water that was originally bound with the colloidal substances becomes free, leading to a “self-moistening” phenomenon in stored Pu'er tea. As this self-moistening occurs, water-soluble colloidal substances in the tea may undergo hygroscopic dissolution (this is particularly noticeable when storing Pu'er tea with low maturity). All of these factors contribute to dry matter loss. During storage, the amount of dry matter…

Recently, there has been frequent rainfall in South China, posing a challenge for storing Pu'er tea. Proper handling can lead to better transformation of the tea, while improper handling can cause issues such as mold. Storage has become a challenge, as different regions have varying climates, so is there a difference in storage methods? Don't worry, after reading this article, you will find answers to these questions. The Four Factors Affecting Pu'er Tea Storage When the same Pu'er tea is stored in different environments, the final aged quality will vary. The four factors that significantly influence the quality of Pu'er tea storage are "temperature," "humidity," "light protection," and "air." These play the most significant role in the transformation process of Pu'er tea during storage. 1. Temperature: Temperature plays a crucial role in the transformation of Pu'er tea. Excessively high temperatures can cause the tea to develop off-flavors; in excessively low temperatures, the transformation process slows down or even stops. Therefore, a relatively suitable temperature is essential for storing Pu'er tea. The temperature for storing Pu'er tea should not be too high or too low, and it is recommended to maintain it around 25°C ± 3°C. 2. Humidity: Humidity is also…

In the height of summer, we've entered the dog days. The weather is both sultry and humid. When we take out some tea stored at home to tidy up, we often find that much of it has molded and can no longer be consumed – a great pity. Nowadays, more and more people enjoy tea, but many don't know the best methods for storing it. Some even keep their tea in basements, garages, or even in the refrigerator with food – all very incorrect practices. Tea leaves have strong hygroscopic and odor-absorbing properties, making them easily susceptible to absorbing moisture and odors from the air. This is especially true in the hot, humid weather of summer when they are more prone to microbial growth. How should you store tea at home? Most teas purchased by households come in cans or as loose tea. Since you won’t use it all at once, you’ll face the issue of storage. Here are some common household tea storage methods. Let’s learn them together. Sealed Bag and Foil Bag Storage Method Select bags with sealable closures designed for food, or professional sealable bags. Choose those made from thicker, higher-density materials and avoid using scented or…

A commonly used method to store white tea is the "three-layer packaging method," which involves preparing a cardboard box, an aluminum bag, and a plastic bag. First, take out the white tea and put the tea leaves into the aluminum bag, squeezing out the air and sealing it. Then place an outer layer of plastic bag over it and tie the bag’s opening securely. Take a five-layer corrugated cardboard box, put the tea inside, and seal it with tape. Finally, store the tea in a dry, cool room free from odors, keeping it off the floor and away from walls. White Tea Storage Methods 1. Hot Water Bottle Storage Method Hot water bottles are common tools with good airtightness and stable temperatures, making them ideal for storing white tea. To store white tea using a hot water bottle, simply place the tea leaves into a new hot water bottle and seal it. 2. Refrigerated Storage Method Storing tea in the refrigerator is a common method. Seal the tea in bags or tea cans and store them in the refrigerator, ideally at 5°C. For home storage, first, seal the white tea in a tin foil bag and then place it in…

Those who enjoy drinking Pu'er ripe tea usually keep some at home. However, those lacking storage experience often find their tea has molded, deteriorated, or developed strange odors after a few years. So, how should we correctly store Pu'er tea? Key Points for Storing Pu'er Ripe Tea 1. Avoid Pollution: The environment in which you store Pu'er tea must be free from pollution. Pollution is something to be avoided when storing any type of tea, and this is no different for Pu'er tea. Pu'er tea can quickly absorb the odors of other substances, potentially masking or altering its own scent. Therefore, when storing Pu'er tea at home, it is crucial to prevent common odors like cooking oil, cosmetics, and medications from contaminating the tea. 2. Avoid High Temperatures: The ideal temperature range for storing Pu'er tea is between 20°C and 30°C. Higher temperatures can cause the tea to become acidic. In daily life, many regions do not meet this condition, so storing it at home under normal conditions is sufficient. It is important to note that during the storage process, avoid placing Pu'er tea near heat sources such as fireplaces, kitchens, or machinery where temperatures may rise. 3. Avoid Moisture:…