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Dianhong
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| Dianhong tea 滇紅茶 | |
|---|---|
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| Type | Red |
| Other names | Yunnan tea Yunnan red tea Yunnan Red tea |
| Origin | Yunnan Province, China |
| Quick description | Robust and malty, some types are very fine while others are used for blending. High quality leaves are uniformly covered in golden-orange bud hairs. |
Dianhong tea (Chinese: 滇紅茶; pinyin: Diān hóng chá; lit. 'Yunnan red tea'; pronounced [tjɛ́n xʊ̌ŋ ʈʂʰǎ]) is a type of relatively high-end, gourmet Chinese red tea sometimes used in various tea blends and grown in Yunnan Province, China.[1][2] The main difference between Dianhong and other Chinese red teas is the amount of fine leaf buds, or "golden tips," present in the dried tea.[2] Dianhong tea produces a brew that is brassy golden orange in colour with a sweet, gentle aroma and no astringency. Cheaper varieties of Dianhong produce a darker brownish brew that can be very bitter.
History and etymology
[edit]Teas grown in Yunnan prior to the Han dynasty (206 BCE – 220 CE) were typically produced in a compressed form similar to modern pu'er tea. Dian hong is a relatively new product from Yunnan that began production in the early 20th century. The word diān (滇) is the short name for the Yunnan region while hóng (紅) means "red (tea)"; as such, these teas are sometimes simply referred to as Yunnan red or Yunnan black. However, such references are often confusing due to the other varieties of teas produced in Yunnan.
Varieties
[edit]- Broken Yunnan (Chinese: 滇紅碎茶; pinyin: diānhóng suì chá): A cheap tea used for blending which contains very few golden buds and is generally bitter on its own. This tea is easily identified by the largely black dried leaves with only a few bursts of golden tips. The brew is dark and not brassy but reddish brown. The taste can sometimes be as strong as cooked pu-erh tea. Classified in Orange pekoe grading as BOP.
- Yunnan Gold ( also known as 'Golden Yunnan' ) (Chinese: 滇紅工夫茶, 滇紅; pinyin: diānhóng gōngfū chá): A dianhong with fewer golden buds and more dark tea leaves. It is on par with the pure gold, and is priced similarly, but makes teas with slightly different characteristics. The brew has a brassy red color different from other black teas and a vivid sweetness not quite as intense as "Yunnan pure gold". Its rich, malty, earthy and slightly sweet flavour profile, often with hints of chocolate, honey, and a subtle spice make it sought after amongst tea connoisseurs. Classified in Orange pekoe grading from OP to TGFOP.
- Yunnan Pure Gold (Chinese: 金芽滇紅茶; pinyin: jīnyá diānhóng chá): Considered the best type of Dian hong tea. It contains only golden tips, which are usually covered in fine hairs. When viewed from a distance, the dried tea appears bright orange in colour. The tea liquor is bright red in colour and exhibits a gentle aroma and a sweet taste. The leaves are reddish brown after being brewed. Classified in Orange pekoe grading from TGFOP to SFTGFOP.
- Golden needle (Chinese: 金针茶; pinyin: jīnzhēn chá) is a pure black variety of dianhong. The leaves are golden in color and yield an amberish infusion.
- Pine Needle (Chinese: 松针滇红; pinyin: Sōng zhēn diān hóng) is a preparation technology developed in the 20th century preserving straight leaf form, which makes a mix of differently coloured leaves reminiscent of old needles fallen off a pine tree. Non-curved leaves are a rather common shape for lightly fermented green teas, however for black teas this is a novelty.
See also
[edit]- Golden Monkey tea
- Keemun tea
- Pu'er tea, another variety of tea commonly produced in Yunnan
References
[edit]- ^ Summary of World Broadcasts: SWB.. Asia-Pacific. Weekly economic report. BBC Monitoring. 1999. p. 10.
- ^ a b "Dianhong Golden, Yunnan's Black Tea | Tea Guardian". Tea Guardian. 2014-07-11. Retrieved 2022-07-14.
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Dianhong
View on Grokipediafrom Grokipedia
History
Origins and Early Development
Yunnan's tea production has a long history dating back to the Han Dynasty (206 BCE–220 CE), when wild tea plants were first domesticated in the region's river valleys and mountains, primarily for local consumption and trade as compressed teas. These early teas, similar to modern pu'er, were formed into bricks or cakes for easy transport along trade routes, with records of cultivation and processing emerging as early as the Tang Dynasty (618–907 CE) among the Nanzhao Kingdom's nobility in areas like Xishuangbanna. By the Qing Dynasty (1644–1912), pu'er tea had gained prominence as a staple export and tribute item, dominating Yunnan's tea economy, though production focused exclusively on green and fermented compressed varieties rather than oxidized black teas.[3][1] The development of Dianhong black tea began in the late 1930s amid the Second Sino-Japanese War, when Japanese forces occupied coastal tea-producing regions like Fujian and Qimen, disrupting China's primary black tea exports. In November 1938, the Nationalist government relocated tea experts, including Feng Shaoqiu and Fang Hejun, from these areas to Fengqing County in Lincang Prefecture, Yunnan, to establish an inland production base and sustain foreign trade revenue for the war effort. There, they adapted black tea processing techniques to local leaves at the newly built Shun-ning Experimental Tea Factory, marking the first systematic production of oxidized black tea in Yunnan using machinery imported from coastal factories. This initiative leveraged Yunnan's proximity to the Burma Road, a critical supply route, to facilitate exports despite blockades.[2][4] Following World War II and the establishment of the People's Republic of China in 1949, Dianhong production expanded significantly in the 1950s and 1960s under state-led agricultural reforms and support from the China Tea Corporation. This period saw a shift from Yunnan's traditional dominance in pu'er and green teas toward black tea cultivation, driven by demand for export commodities to fund national development; by 1959, Fengqing had produced its inaugural premium all-bud black tea, known as Jinya or Yunnan Golden Buds, despite challenges like the Great Leap Forward. State investments in factories and worker training boosted output, transforming Dianhong into a key economic driver for rural Yunnan. However, production declined in the 1970s due to political upheavals including the Cultural Revolution, which disrupted agricultural initiatives. Dianhong revived in the 1980s with China's economic reforms, as entrepreneurial efforts and renewed state support led to increased production and quality improvements, solidifying its role in both domestic and international markets.[4][2] A pivotal innovation in the 20th century was the adaptation of large-leaf Camellia sinensis var. assamica cultivars, native to Yunnan's tropical highlands, for black tea processing, which differentiated Dianhong from earlier compressed and green teas. These robust, high-yield varieties, introduced systematically in the 1930s and refined post-war, produced bolder flavors and higher oxidation potential compared to the smaller-leaf sinensis types used elsewhere in China, enabling Dianhong's distinct profile and scalability for international markets. This shift not only diversified Yunnan's tea heritage but also positioned the province as a modern black tea powerhouse by the mid-20th century.[1][4]Etymology
The term "Dianhong" (滇红) derives from two Chinese components: "Dian" (滇), an ancient abbreviation for Yunnan Province originating from the historical Dian Kingdom—a Bronze Age civilization in the region that was incorporated into the Han dynasty in the 2nd century BCE—and "hong" (红), meaning "red," which refers to the reddish liquor produced by this fully oxidized black tea in Chinese nomenclature.[5][3][6] The name was coined in the late 1930s during wartime efforts to develop Yunnan's tea industry, with initial trial production under the name "Yunhong" in 1939 at the Shunning Experimental Tea Factory; it was officially formalized as "Dianhong" on April 9, 1940, by the Yunnan China Tea Trading Company to create a distinct brand for the province's black tea, setting it apart from established Chinese varieties such as Keemun (Qimen Hongcha) and Lapsang Souchong (Zhengshan Xiaozhong).[7][8] Commonly known in English as Yunnan red tea or Yunnan black tea, "Dianhong" was specifically adopted in the mid-20th century for export branding to promote the region's large-leaf black teas internationally, particularly during and after World War II when Yunnan tea exports helped fund national needs.[5][9]Production
Cultivation
Dianhong tea is primarily cultivated from the large-leaf variety of Camellia sinensis var. assamica, a robust species native to Yunnan Province, China, prized for its adaptability and suitability for black tea production due to higher levels of polyphenols and catechins in the leaves.[3] This variety thrives in the region's diverse ecosystems, often growing as ancient trees or semi-wild bushes that can reach significant heights, contributing to the tea's rich flavor potential through deep root systems that absorb minerals from the soil.[1] The key growing regions are concentrated in western and southwestern Yunnan, including counties such as Fengqing and Lincang in Lincang City, as well as Baoshan, where elevations range from 1,000 to 2,000 meters above sea level.[3] These areas feature a subtropical highland climate with mild temperatures averaging 15–18°C, significant diurnal variations up to 10°C, abundant rainfall, and frequent misty conditions that protect young leaves from excessive sunlight and promote slow, even growth.[3] The fertile, slightly acidic soils, enriched with organic matter from surrounding forests, provide essential nutrients, supporting the biodiversity that enhances the tea plants' resilience.[3] Cultivation practices emphasize sustainability, with many plants grown organically or semi-wild in forested or terraced mountainous fields to mimic natural conditions and avoid chemical inputs.[1] Harvesting occurs seasonally from early March to late November, allowing multiple flushes, and follows traditional hand-picking methods to select tender shoots—typically one bud with one to three leaves—for optimal quality.[3] Challenges in cultivation include adapting to Yunnan's varied microclimates, which can influence leaf development across elevations and valleys, and managing pests through traditional, low-chemical methods like natural predators and pruning to maintain ecological balance without compromising yield.[1] Government regulations in ancient tea areas further limit plucking volumes to preserve long-term plant health.[1]Processing Methods
The processing of Dianhong tea, a type of Congou black tea produced from the large-leaf assamica variety in Yunnan, China, involves four primary steps: withering, rolling, oxidation, and drying, which transform fresh leaves into the final product while developing its characteristic qualities. These methods emphasize controlled moisture loss and enzymatic reactions to promote oxidation, distinguishing black teas like Dianhong from other varieties.[10] Withering initiates the process, where freshly plucked leaves are spread out to reduce moisture content from approximately 75% to 60-65%, making them pliable and triggering enzymatic changes that soften the leaf structure. This step typically lasts 12-24 hours and can be conducted outdoors under natural conditions or indoors using controlled environments such as warm air at 20-30°C with 45-65% humidity, depending on weather and desired outcomes; for instance, natural withering involves layering leaves 3 cm thick at 21-24°C for 12 hours, while modern warm-air methods shorten it to 9 hours at similar temperatures for efficiency. Shaking withering, a variation using mechanical agitation in rounds at 23-25°C, further accelerates moisture evaporation while preserving leaf integrity.[11][12][10] Following withering, rolling breaks the cell walls of the leaves to release intracellular juices, facilitating oxidation and shaping the tea into twisted strips characteristic of Congou style. This step generally takes 30-60 minutes, with mechanical rolling machines applying light and heavy pressure in sequences—such as 25 minutes of light rolling followed by 15 minutes of heavy rolling—to ensure even disruption without excessive fragmentation, particularly suited to the thicker assamica leaves used in Dianhong. Hand-rolling remains an option for premium batches to achieve finer control over twist and juice expression.[12][10] Oxidation, often referred to as fermentation in tea processing, exposes the rolled leaves to controlled air at 24-30°C for 2-4 hours (or up to 4.5 hours for Yunnan Congou), allowing polyphenol oxidase enzymes to react with oxygen and form theaflavins and thearubigins that impart the red liquor and mellow flavors unique to black teas like Dianhong. High humidity (95-98%) is maintained to prevent drying during this phase, with the process halted once the leaves reach a coppery hue.[13][12][10] Drying finalizes the transformation by rapidly removing remaining moisture to 3-5% through high-heat methods, arresting oxidation and preserving the tea's structure. Leaves are typically baked in hot-air dryers starting at 110°C for 20 minutes to reach 20-25% moisture, followed by cooling and a secondary drying at 85°C until stabilization; sun-drying serves as a traditional alternative in suitable climates, though mechanical drying predominates for consistency. Post-drying, leaves undergo sorting to separate golden tips from coarser material, enhancing grade uniformity. Since the 1980s, mechanization—including automated withering troughs, rolling machines, and conveyor dryers—has improved efficiency in large-scale production, yet artisanal hand-processing persists for high-end Dianhong to retain nuanced quality.[12][10]Characteristics
Physical Appearance
Dianhong tea's dry leaves typically exhibit tight, wiry twists ranging from dark brown to black, featuring abundant golden tips that are particularly prominent in premium grades, giving the leaves a glossy and plump appearance.[14] These golden tips, often covered in fine downy hairs, can constitute a high proportion—up to 100% in top varieties like Jin Zhen—contrasting with the darker leaf material and distinguishing high-quality Dianhong from cheaper types that may include more broken, greenish leaves.[15][16] Upon infusion, the leaves expand into soft, elongated forms with a reddish-brown hue accented by bright coppery tones from the visible golden buds, maintaining a vibrant and uniform texture.[17] The brewed liquor of high-quality Dianhong displays a clear, brassy golden-orange color, shifting to a deeper reddish-brown in lower grades, always remaining bright and free of cloudiness to highlight its purity.[14][18]Sensory Profile
Dianhong tea is renowned for its inviting aroma, which is typically sweet and gentle, featuring prominent notes of honey and subtle floral hints derived from compounds such as linalool and geraniol.[19][20] Premium varieties often incorporate additional fruity or malty undertones, including hints of chocolate and dried fruit, enhancing the overall richness.[21][22] These aromatic qualities stem from key volatile compounds like phenylacetaldehyde and 2,3-pentanedione, which contribute to a caramel-like sweetness in higher-quality infusions.[20][23] The flavor profile of Dianhong is smooth and mellow, characterized by brisk maltiness and caramel sweetness, with a lingering sweetness that avoids bitterness or excessive astringency.[21][24] Common taste notes include honey-like depth, dark chocolate, and occasional ripe stone fruit or roasted nut accents, creating a balanced and approachable gustatory experience.[22][20] In sensory evaluations, the tea's flavor is often described as heavy and thick yet harmonious, with contributions from aroma-active compounds like β-ionone epoxide adding fruity and woody nuances.[19] Dianhong exhibits a full-bodied mouthfeel with a silky, velvety texture that coats the palate smoothly, providing a moderate energizing effect known as cha qi without harshness.[21][24] The aftertaste is clean and enduring, often leaving subtle sweet or floral impressions that persist.[22] Sensory qualities vary by grade, with high-end Dianhong displaying vibrant smoothness and pronounced sweet, floral vibrancy due to elevated levels of desirable volatiles like linalool.[20][23] Lower grades tend toward more earthy bitterness and astringency, influenced by higher catechin content such as EGC and ECG, resulting in a less refined profile.[19][24]Comparison with Other Black Teas
Dianhong is distinguished from many other black teas by its production from the large-leaf Camellia sinensis var. assamica variety in Yunnan's high-altitude regions, often sourced from ancient tea trees. This terroir contributes to natural honey sweetness, low astringency, velvety mouthfeel, and complex notes of malt, honey, caramel, chocolate, and dried fruit. These attributes make Dianhong versatile for gongfu or Western brewing and grant it moderate aging potential, with some variants developing deeper sweetness over time.[25][26]- Compared to Keemun (Qimen) from Anhui Province, Dianhong is maltier and sweeter with prominent golden tips and honey-caramel notes, while Keemun tends toward fruity, floral, and occasionally smoky or nutty characteristics with orchid and stone fruit accents.[26]
- Unlike Lapsang Souchong, which acquires an intense pinewood smoke aroma and flavor, Dianhong remains smooth and sweet without smokiness, positioning it as a more approachable daily black tea.[26]
- With Assam from India, also from the assamica variety, Dianhong shares a malty base but offers a sweeter, gentler, and less brisk and astringent profile, whereas Assam is bolder and commonly used in milk tea blends.[25][26]
- Darjeeling black teas are lighter with muscatel, floral, and crisp citrus notes, contrasting Dianhong's fuller body, robust texture, and richer honey and cacao flavors.[25][26]
- Ceylon (Sri Lankan) black teas are brisk and bright with citrus and minty notes, differing from Dianhong's richer fruit layers, thicker mouthfeel, and lower astringency.[25][26]
- Golden Monkey from Fujian Province shares golden buds and sweet malty cocoa notes with premium Dianhong, but Dianhong often benefits from Yunnan's ancient tree sourcing and diverse terroir, yielding distinct honey sweetness and nuanced complexity.[25]