Humidity

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…

Both young and middle-aged people gradually develop the habit of drinking tea, so everyone is familiar with it. Tea, rice, oil, salt, soy sauce, vinegar, and tea itself are essential, highlighting its importance. Among the six major types of tea, Pu'er tea is very popular, with many enthusiasts collecting it in large quantities. How Should Pu'er Tea Be Stored? Pu'er tea is very popular among both new and seasoned tea drinkers. How to store Pu'er tea properly is a common concern. If stored incorrectly, the tea can become moldy and essentially useless. Tea has a spirit, and storage is the second life of Pu'er tea. The same cake of tea stored in different places or by different people will have varying flavors after some time. In this sense, each collector of Pu'er tea becomes a creator of its production and quality. With proper care and nurturing, it will reward you with its vitality and alluring fragrance. First, store it in a sealed container in a clean, dark, and humidity-controlled environment. Second, compressed teas are preferred, the tighter the better. Loose tea has a larger surface area exposed to air, making it prone to oxidation and unsuitable for long-term storage. Tighter…

Unique Geographic Landscape The birthplace of Zhengshan XiaoZhong black tea, Tongmu Village in Xingcun Town, Wuyishan City (formerly Chongan County), is located within the Fujian Wuyi Mountain National Nature Reserve. The reserve lies between 27°33'N and 27°54'N latitude and 117°27'E and 117°51'E longitude, spanning 22 kilometers from southeast to northwest and 52 kilometers from north to south, covering a total area of 565 square kilometers. Compared with other regions at the same latitude, Wuyi Mountain is situated in a humid forest zone, which offers unique natural environmental conditions. Its location on the edge of the world's largest continent and two major oceans means that it experiences strong northeast and east winds in winter, and warm and humid southeast and southwest winds in summer, along with frequent typhoons during summer and autumn, providing abundant rainfall. This region has the lowest temperatures, highest rainfall, highest relative humidity, and most fog days in Fujian Province. Under the climatic conditions of hot and rainy summers and wet and cold winters, a unique geographic landscape has formed around Wuyi Mountain. A World-Renowned Treasure Trove of Biodiversity Tongmu Village is located in the northern part of the Wuyi Mountain Range, within the Wuyi Mountain National Nature…

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…

Summer is a good time to expel the cold and dampness from your body. As temperatures rise, so does the humidity in the air. For those with high levels of dampness, this can be even more harmful. Do you know how to get rid of dampness? Here are some recommended teas for summer to help. Tea is not medicine, but it's a great health drink. Although tea is not medicine, different people with different constitutions should make different choices. For those with high levels of dampness, there should also be different considerations when choosing tea... What are the harms of having high levels of dampness? 1. When dampness meets cold, it becomes cold-dampness; when it meets heat, it becomes damp-heat; when it meets wind, it becomes wind-dampness. Under the skin, it causes obesity; 2. If dampness remains in the body and isn't eliminated, one may experience loose stools and unformed feces. The tongue may appear yellowish and greasy; 3. Those with high levels of dampness feel lethargic throughout the day, affecting digestive functions. They may feel heavy-headed, with limbs and waist feeling weighed down by something, making them reluctant to move; 4. Those with high levels of dampness tend to…

The pile-fermentation process is a critical step in the production of ripe Pu'er tea, and the pile-fermentation time typically lasts around 45 to 60 days. However, the exact duration may vary due to factors such as the tenderness of the tea leaves, the temperature and humidity of the fermentation environment, among others. The pile-fermentation of ripe tea is a relatively complex and crucial process, usually taking about 45 to 60 days, but the actual duration can be significantly influenced by various factors. The tenderness of the tea leaves is an important factor. Relatively tender leaves react faster during fermentation and may require slightly less time; whereas coarser, older leaves might need more time to complete the fermentation adequately. The temperature and humidity of the fermentation environment play a critical role. Suitable and stable temperatures promote microbial activity, while appropriate humidity ensures good progress of fermentation. If the temperature is too low, the fermentation process may slow down, extending the required time; if the humidity is too low, it may result in insufficient fermentation, and conversely, if it's too high, over-fermentation or other adverse conditions may occur. Ventilation conditions are also significant, as proper ventilation provides an appropriate oxygen environment for…

The floral-scented Bai Mudan tea is made from suitable raw materials for white tea production, processed through a combination of withering, shaking the green, stacking after merging sieves, baking, and sorting. The processing of floral-scented Bai Mudan tea mainly includes the following steps: 1. First combined withering: indoor natural withering, indoor heated withering, and sun withering are combined. Sun withering should be done during the morning or evening when the sunlight is weak. 2. Shaking the green: this is done once, shaking 40 to 60 times. 3. Second combined withering: it starts with indoor heated withering at a temperature of 15 to 25°C and relative humidity of 40% to 50%, lasting 3 to 6 hours. If the moisture content of the withered leaves reaches 18% to 22%, they can then be transferred to indoor natural withering, which lasts 2 to 5 hours to complete. 4. Stacking after merging sieves: after the second combined withering, the sieves are merged, and the tea is piled up to a thickness of 15 to 35 cm. The stacking process lasts 1 to 7 days. 5. Initial baking: at a temperature of 50 to 60°C, lasting 60 to 100 minutes. 6. Sorting: after the initial…

On August 14, the first “Cool Summer Retreat” media promotion conference was held on Mount Wugong. At the conference, the list of the first batch of “Climate-Friendly Products” for 2024, certified by the China Meteorological Service Association, was announced. Benefiting from its unique climate, Jingning Huiming Tea was selected as one of the first batch of “Climate-Friendly Products” for 2024. Jingning Huiming Tea Selected as One of the First Batch of “Climate-Friendly Products” for 2024 The “Climate-Friendly Products” certification is a joint effort by the China Meteorological Service Association and professional certification bodies to evaluate the climate quality of agricultural products. This work involves assessing factors such as climate, soil, and water quality in the agricultural environment to confirm the unique qualities of the product. The certification results are announced on the official websites of the State Administration for Market Regulation and the association. After the conference, a reporter from Beijing News Shell Finance conducted an exclusive interview with Yan Yihua, President of the Jingning She Autonomous County Tea Culture Research Association, regarding the process of creating Jingning Huiming Tea as a “Climate-Friendly Product” and future plans. Yan Yihua stated that the unique soil and climate conditions in the mountainous…

First article: Representative Varieties and Three Aromatic Zones in the Yiwu Tea Area (click to read); Second article: Dongguan Warehouse, Kunming Warehouse, Hong Kong Warehouse, Flavors, White Frost, "Warehouse Manipulation" Issues (click to read); Third article: Storage Cycle Issues for Yiwu Green Bud Tea (click to read); Fourth article: Storing Puer, Pursue Famous Mountain Origins or Quality? Fifth article: Differences in Small Heap Fermentation, Large Heap Fermentation, and Tea Evolution Ripe Tea Techniques? The following is Part Four, focusing on storing Puer, pursuing famous mountain origins or quality? Shi Yun: I would like to express great appreciation for Teacher Li Yang's sharing. A young lady just now wanted to ask President Zheng and Teacher Li Yang about a conversion issue. Zhou Xin: Teacher, regarding storage, for example, Tianmen Mountain, does it mean that as long as its glycoside content is high, and the catechin and caffeine content is low, it suggests that it requires higher humidity? And Menghai tea, with higher catechin and caffeine content, has lower humidity requirements, only forming white frost when humidity exceeds 14%. This is the first time I've heard this, so I want to confirm if my understanding is correct. Zheng Shaohong: Indeed. For instance,…

According to information from the Zhejiang Meteorological Bureau, "Plum Girl" is expected to persist for a while. On June 25-26, there will be heavy rains and possibly severe convective weather in parts of Hangzhou, Jiaxing, Huzhou, northern Shaoxing, and northern Quzhou. Recently, the central and northern regions of Zhejiang have experienced continuous rainfall with significant cumulative precipitation. Image Source: Central Meteorological Observatory For tea farmers, while tea plants thrive in moisture, they are not tolerant of waterlogging. Prolonged waterlogging can lead to root damage, increased incidence of pests and diseases, reduced tea production, and decreased quality and yield of tea leaves. Will the consecutive heavy rains affect the growth of tea plants? What protective measures should be taken? Chao News interviewed Lu Debiao, the chief tea expert at the Zhejiang Department of Agriculture and Rural Affairs and researcher, for insights. On June 21, Lu Debiao (right) inspected the condition of tea plants after consecutive heavy rains in Liandu District, Lishui City, together with local stakeholders. "The current weather conditions have had little overall impact on tea gardens and tea production," emphasized Lu Debiao. In dealing with the upcoming prolonged rainy period, the most critical protective measure is to promptly inspect…

Puer tea has the characteristic of becoming more fragrant with age, and its true value is best realized during post-fermentation transformation. This is why aged Puer teas are highly favored. What are the precautions for collecting Puer tea? Puer Tea Collection Precautions Firstly, some people blindly pursue Puer teas that are 30 to 50 years old, even seeking rare aromas like camphor or lotus. In reality, Puer teas over 20 years old are already quite scarce, and those over 30 to 40 years old are exceedingly rare. Some so-called "aged teas" sold on the market for hundreds of yuan are actually produced by merchants using teas that are only one to two years (or even a few months) old, compressed at a cost of just tens of yuan. Secondly, many believe that they can make substantial profits from collecting and aging Puer tea. However, there are significant challenges in personally collecting Puer tea at home. The aging process of Puer tea is influenced by factors such as time, temperature, air, humidity, and environment. Different storage environments and temperatures can result in significant differences in the quality of the tea. One characteristic of tea is its ability to absorb odors; therefore,…

Guipa Tea is a specialty product of Xiangzhou County, Laibin City, Guangxi Zhuang Autonomous Region, and is a Chinese National Geographical Indication product. The name “Guipa Tea” comes from Guipa Village nearby, where it is produced, and it is renowned for its sweet taste, beautiful shape, and fresh color. Name: Guipa Tea Year of Registration: 2020 Place of Origin: Xiangzhou County, Laibin City, Guangxi Zhuang Autonomous Region Quality Characteristics: tight and twisted with green color and downy appearance, strong aroma with floral notes, bright yellow-green infusion, sweet and mellow flavor, and light green leaf base. Product Introduction Guipa Tea has tight and twisted leaves with a green color and downy appearance, a strong aroma with floral notes, a bright yellow-green infusion, a sweet and mellow flavor, and a light green leaf base. Sensory Characteristics Guipa Tea has tight and twisted leaves with a green color and downy appearance, a strong aroma with floral notes, a bright yellow-green infusion, a sweet and mellow flavor, and a light green leaf base. Intrinsic Quality Indicators The main quality indicators of Guipa Tea are controlled within the following ranges: caffeine ≥2%, tea polyphenols ≥20%, water-soluble extracts ≥40%, total free amino acids ≥4%. Safety Requirements:…

How should an idle purple clay teapot be stored?In fact, many of us who collect teapots will often encounter this problem. Typically, when we buy a new teapot, we rinse it with tea or water to "wake up" the clay. However, when we store it in a brocade box, we often overlook one important detail, which is a big no-no for storing a purple clay teapot. Here, I'll explain some common reasons why purple clay teapots develop mold spots: Possibility One: After washing the teapot, the owner puts the lid back on without allowing the pot to completely dry. This leads to stagnant water inside the pot, creating a humid environment that lacks air circulation, which provides an ideal habitat for mold growth. Possibility Two: High humidity in the air. During February and March, which are the rainy months in southern China, the air is very humid. If the space where the teapot is stored is not well-ventilated, improper storage can lead to mold formation. How do you remove mold spots? Procedure: Pour boiling water into the purple clay teapot. When the pot is thoroughly heated, pour out the hot water and fill it with cold boiled water. Repeat this…

Ripened tea can nourish the stomach because, after fermentation, it produces a rich variety of beneficial bacterial colonies that protect the gastric mucosa. It serves to strengthen the spleen and stomach, protect the stomach, and lower blood lipids. Although ripened tea has certain benefits, it should be consumed in moderation to avoid overburdening the gastrointestinal tract and causing discomfort. Ripened tea is made by piling and fermenting under suitable temperature and humidity conditions. During production, bacteria grow and multiply. Under the action of these bacteria, large biomolecular nucleic acid components are transformed into new soluble monosaccharides and oligosaccharides. Additionally, during fermentation, vitamin C increases significantly, which can enhance the function of the immune system. Furthermore, the abundant beneficial bacterial colonies in fermented ripened tea do not irritate the stomach when ingested but instead form a protective film on its surface, providing beneficial protection. Why is drinking ripened tea advocated? The best way to use ripened Pu'er tea for nourishing the stomach: Upon waking up in the morning, drink a warm cup of ripened tea while on an empty stomach, preferably choosing high-quality ripened Pu'er tea that has been stored for more than three years. If possible, drink naturally fermented Pu'er…

Puer tea does indeed improve with age, primarily because the chemical components within the leaves undergo carbonization over time, significantly altering the taste. Once it has been aged for 15 to 20 years or more, the brewed tea becomes even more enjoyable. However, it is not recommended to store the tea indefinitely, as this can cause the loss of its nutritional components. Is Puer Tea Better with Age? The saying that Puer tea improves with age comes with conditions. Not all Puer teas benefit from extended storage. The longer aging process enhances the aroma and flavor, making the tea more complex and desirable. As a result, older Puer teas are often more expensive. However, there is an optimal period for aging, during which the unique qualities and aged aroma develop. This transformation is due to post-fermentation processes that occur in storage, where compounds like polyphenols, amino acids, and sugars change, leading to an ideal color and aroma. If stored improperly or for too long, the quality can deteriorate, and beneficial components may degrade or oxidize, losing the tea's characteristic flavors. Conditions for Puer Tea to Improve with Age 1. Good Raw Material Sunlight, soil, climate, and temperature fundamentally determine the…

Planting is a critical link in the tea industry chain, providing a guarantee for high-quality tea but also accounting for a significant portion of current tea production costs. Complex planting conditions and labor shortages continue to drive up the cost of tea cultivation, making intelligent planting an inevitable path for transforming tea production from traditional to modern modes. I. Framework of Intelligent Tea Tree Planting Intelligent planting is a comprehensive management system supported by advanced technologies such as the Internet of Things (IoT), big data, and cloud computing, encompassing agricultural monitoring, optimized decision-making, and automated equipment scheduling. 1. Monitoring and Sensing Layer The monitoring and sensing layer acts as the "eyes" and "ears" of the intelligent system, serving as the foundation for information processing. This layer relies on various sensors mounted on carrier platforms to collect real-time data about the environment around the tea trees and the trees themselves, such as temperature, humidity, radiation, and nutrient levels. The intelligent system requires that this information be acquired in situ, in real-time, with precision, speed, and intelligence, necessitating massive data storage compared to traditional observations. 2. Transmission and Storage Layer The transmission and storage layer serves as the "nervous system" and "warehouse"…

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…

Summer is a good season to expel cold dampness from the body. As temperatures rise, the humidity in the air also increases. This can be more harmful for people with high levels of dampness. Do you know how to eliminate dampness? Here are some recommended teas for removing dampness during summer.Tea isn't medicine, but it's a great health drink. Although tea isn't medicine, different body types should choose different types of tea. For those with high levels of dampness, the choice of tea should also vary... What Are the Dangers of High Levels of Dampness? 1. When dampness in the body meets cold, it becomes cold-dampness; when it meets heat, it becomes damp-heat; and when it meets wind, it becomes wind-dampness. Under the skin, it leads to obesity. 2. If dampness remains in the body, one may experience loose stools and unformed feces regularly. The tongue will appear yellow with a greasy coating. 3. People with high levels of dampness feel lethargic all day, which affects their digestive function. They feel heavy in their head, limbs, and waist, as if something is wrapping around their body, making them lazy to move. 4. Those with high levels of dampness tend to…

Tender buds fragrant and spirited, I say they're the finest of herbs. — "Tea Poem" by Zheng Ao The misty and drizzly Longhua, with its suitable temperature and humidity, and naturally selenium-rich soil, gives birth to Longhua tea. Longhua tea boasts a clear and bright broth, a pure aroma, and an exquisite sweetness that lingers on the palate. Development of Longhua Selenium-Rich Tea Longhua Town is 80 kilometers away from Pingshan County and covers an area of 181 square kilometers. Tea is the leading industry in Longhua Town, with a total tea garden area of 41,000 mu, of which nearly 37,000 mu are in full production. The majority of the tea gardens' soil is rich in minerals such as "selenium" and "strontium," hence it is also known as Longhua selenium-rich tea. Since 2023, following the requirements for high-quality development set forth by central, provincial, municipal, and county-level authorities, Longhua Town has vigorously developed its leading tea industry. By improving infrastructure, introducing high-quality tea seedlings, optimizing cultivation techniques, and strengthening scientific management, the town has established 500 mu of organic tea gardens in Baxianshan Village, 500 mu of selenium-rich tea demonstration bases in Renmin Village, and 400 mu of high-standard tea…

The origin of Dahongpao tea is Wuyi Mountain, Fujian Province. Wuyi Mountain enjoys the reputation of being a “Tea Mountain” and is renowned both at home and abroad as the birthplace of high-quality Wuyi Rock Tea and genuine black tea. Selected from exceptional single-bushes in the Wuyi Mountain tea gardens, it is meticulously crafted using traditional hand methods. Its outstanding quality makes it one of China's special-name teas and also one of the top ten famous Chinese teas. The Environment of Dahongpao’s Origin The climate is mild with warm winters and cool summers, with an annual average temperature between 18 to 18.5°C; there is abundant rainfall, with an annual precipitation of around 2000mm. Between the peaks and rock formations, clear streams flow, and the mountain is often shrouded in mist, with an annual average relative humidity of about 80%. Most of the tea gardens are located in deep valleys and ravines surrounded by mountains, which shield them from direct sunlight and wind damage. The geology of Wuyi Mountain belongs to the Cretaceous Wuyi Formation, with its lower part composed of quartz porphyry, and its middle part consisting of gravel, red sandstone, shale, tuff, and volcanic breccia layered together. The parent…

Basic Introduction to Baitang Mountain Tea Baitang Mountain Tea, also known as Purple Bud Tea, grows in the Xiangtou Mountain, Luofu Mountain, Nankun Mountain, and Heyuan Guishan, four famous mountains located within Boluo County's Baitang Town, in the Lingnan Mountain range of Guangdong Province. Boluo Mountain Tea is a gift from heaven to humanity, absorbing the essence of Luofu Mountain and the spirit of renowned rivers. The terrain of Baitang is characterized by connected peaks and crisscrossing valleys. It has a mild climate with warm winters and cool summers, abundant rainfall, and is like a natural small basin. These natural conditions are very conducive to the development and growth of tea trees and the formation of high levels of tea polyphenols and aromatic substances. Boluo is located in a subtropical monsoon climate zone, with the Tropic of Cancer running through it. Annual precipitation is 2000 millimeters, and the average temperature is 22 degrees Celsius. The soil is red (yellow) loam, slightly acidic; hills, slopes, and high mountains occupy over 70% of the county's land, with many areas having slopes between 15-45 degrees. This ecological environment is not only suitable for the growth of mountain tea but also particularly conducive to…

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…

Some say that Anhua black tea is one that breathes. When we open a box of preserved old tea, it's like opening a "door to time," telling the story of "aging brings fragrance." Airing the tea provides Anhua black tea with oxygen and moisture, endowing it with new life, like the key to the door of time, the prelude to a moving story~ It's crucial yet easily overlooked. Tea lovers who master the small technique of airing the tea will enjoy better black tea. I. What is Airing the Tea? Airing the tea involves letting stored tea ventilate for a period of time, awakening its aroma and flavor fully. The process of airing the tea commonly involves two stages: contact with air (dry airing) and contact with water (wet airing). Generally, the time from when black tea is removed from storage until brewing is called "dry airing." The process of quickly moistening the tea with boiling water during brewing, allowing the leaves to hydrate and expand, is known as "wet airing." II. How Long Should Airing Last? The duration of airing Anhua black tea is primarily determined by the degree of compression and the condition of the tea leaves. Generally,…