Bùlǎngzú suānchá

Bulang sour tea (Bùlǎngzú suānchá, 布朗族酸茶) is a traditional product of the Bulang people (布朗族, Bùlǎngzú) of Yunnan Province, associated primarily with the Bulangshan mountain area of Menghai County. Fresh tea leaf is heat-fixed — steamed or boiled — packed into a bamboo tube, sealed and left to ferment without air access, most often by burying the tube in the ground. The result is a pickled leaf that is above all eaten: it is chewed and swallowed as is. In Chinese it is called briefly 酸茶 (suānchá), “sour tea,” and the Bulang themselves, according to researchers’ records, call it “miyan.” In scholarly literature this is a pickled tea of single-stage anaerobic fermentation, of the same type as Myanmar lahpet, Thai and Lao miang, and Japanese awa-bancha. Among the six classes of Chinese tea, its place is not defined by technology.

1. Classification and Origin

Type: Not established. Sources differ here, and the difference should be named directly. National standard GB/T 30766-2014 “Classification of Tea” defines dark tea (黑茶, hēichá) as a product from fresh leaf that has undergone fixation (杀青, shāqīng), rolling (揉捻, róuniǎn), wet piling (渥堆, wòduī) and drying. For Bulang sour tea, sources describe something else: heat fixation and fermentation in sealed bamboo; a 2025 article in the journal Foods states directly that the leaf is not rolled before fermentation, and no checked source describes wet piling. A Russian-language description of 2025 calls the product “formally” a dark tea — by the sign of microbiological fermentation. This is an opinion, not a classification by standard, so the class is not indicated here.
Category: In scholarly literature — pickled tea. A Japanese article of 1998 places Bulang sour tea among teas of single-stage anaerobic fermentation — of the same type as Myanmar lahpet, Thai and Lao miang and Japanese awa-bancha (阿波晩茶). The authors separate this group from teas that ferment in air mainly under the action of mold — to which they assign pu-erh. A 2025 article calls Bulang sour tea a traditional fermented food of the Bulang people.
What this object is: A traditional product of a people, not a cultivar of the tea plant, not a trademark and not a batch from one producer. The edible form and the form that, according to some descriptions, is steeped, are two ways of consuming one product, not two varieties.
Origin: China, Yunnan Province (云南, Yúnnán), Xishuangbanna Dai Autonomous Prefecture (西双版纳, Xīshuāngbǎnnà), Menghai County (勐海县, Měnghǎi xiàn), Bulangshan Township — officially Bulangshan Bulang Nationality Township (布朗山布朗族乡, Bùlǎngshān Bùlǎngzú xiāng). A 1992 Chinese reference book writes that the Bulang live mainly on Bulangshan, as well as in the Xiding (西定, Xīdìng) and Bada (巴达, Bādá) mountains, partly scattered — and in a number of other counties, and that they “habitually eat sour tea all year round.” Within the surveyed area, a Japanese field expedition of 1993–1998 found sour tea only among part of the Bulang around Bulangshan and part of the Dai in Dehong Prefecture. Modern distribution has not been verified.
Standard: Not found. In October 2026, databases of local and national standards of the PRC were searched for the keys 酸茶, 腌茶, 布朗族, 布朗, 竹筒茶 and 布朗山. Only two local standards of Dehong Prefecture for De’ang sour tea were found — DB5331/T 35-2021 “德昂酸茶加工技术规程” (processing rules) and DB5331/T 39-2023 “德昂酸茶（干茶）感官审评方法” (sensory evaluation method for dry tea), both with the status “repealed” (废止, fèizhǐ). They do not apply to Bulang tea. Group standards have not been checked, and absence in what was found does not exclude a document under another name.
Intangible heritage: Among sour teas, only the craft of De’ang sour tea (德昂族酸茶制作技艺, 2021) was found in the national list of intangible cultural heritage. Bulang sour tea was not found there, but the national list was not fully reviewed, and provincial, prefectural and county lists were not checked.
Geographical indication: Not found. Bulangshan Township is included in the geographical indication zone for pu-erh (GB/T 22111-2008), but this has no relation to sour tea.
Geographical coordinates: Not given in checked sources.

2. History and Cultural Significance

History:
- 1982. A Chinese ethnographic survey of the Bulang, published that year, is known from a quotation in a 1996 Japanese article. In it, sour tea is described separately from loose tea (散茶, sǎnchá) and from “tea in bamboo” (竹筒茶, zhútǒngchá) — roasted tea baked in a bamboo tube. Sour tea, according to this text, was made in the seventh–eighth months: fresh leaf was boiled, packed into bamboo, buried in the ground and after about a month taken out and eaten; it was exchanged as a gift. The survey itself was not opened.
- 1992. The Chinese reference book “Zhongguo Chajing” (中国茶经, Zhōngguó chájīng), in the section “布朗族的酸茶” (Sour Tea of the Bulang), describes sour tea as a product of the fifth–sixth months, the hot and humid summer season: young tender leaf is boiled, left in a dark place for more than ten days to mold, then packed into bamboo, buried and after more than a month taken out and eaten. The text is known from a facsimile in a 1998 Japanese article; the reference book itself was not opened. Japanese researchers write that they did not find such a two-stage technology in the field.
- 1990s. According to a Japanese expedition of 1993–1998, among the Bulang of Simao and Lincang prefectures sour tea began to disappear early, and with the Cultural Revolution it disappeared almost everywhere; only the Bulang around Bulangshan preserved it, where sour tea was made and eaten almost all year round. Another Japanese author in January 1994 saw sour tea in bamboo among the Bulang of one township of Menghai County, and in February 1995 in one township of Bulangshan did not find it.
- 2021. A group of researchers with the participation of Yunnan Agricultural University took sour tea samples in Banzhang village of Bulangshan Township and tracked how it changed over three months of aging. The results were published in 2025 in the journal Foods; a year earlier, the same group of authors published an article in the journal Food Chemistry about the microorganisms of Bulang sour tea (see section 7).
Name:
- 酸茶 (suānchá) — the Chinese name, “sour tea.” A 1998 Japanese article explains it by analogy: in China, fermented vegetables, fish and meat are called “sour” — 酸菜 (suāncài), 酸鱼 (suānyú), 酸肉 (suānròu), — and pickled tea is called the same way. The same word is used for De’ang sour tea, so the people are indicated in the article title.
- 布朗族酸茶 (Bùlǎngzú suānchá) — “sour tea of the Bulang.” Written without spaces this way in a promotional announcement of a tea festival in Menghai (2023), in a listing of local teas of different peoples. The 1992 reference book titled the section “布朗族的酸茶” (Bùlǎngzú de suānchá) — the same “sour tea of the Bulang,” but with the possessive particle; the primary text confirms this form, and the merged form is taken into the heading as briefer.
- Reading. Sources do not give a tonal reading of the name: the Japanese article writes Suancha in Latin without tones. Bùlǎngzú suānchá is the standard reading of the characters: 布 bù, 朗 lǎng, 族 zú, 酸 suān, 茶 chá; there are no ambiguous characters in the name.
- Bulang name. Japanese researchers recorded it in katakana as “ミヤン” (miyan) and noted that pickled tea of Northern Thailand and Northwestern Laos is called the same way. The 1982 Chinese survey, in the quotation of a 1996 Japanese author, renders the Bulang word with the character 勉 (pronounced miǎn in Chinese), and a 2025 article renders it in Latin as mian. The character 勉 here is a recording of a Bulang-language word, not a Chinese name for tea.
- Russian forms. A Russian-language description of 2025 gives the renderings “miyanga,” “mianga,” “mian” and “miyan” and connects the word with the Thai name for pickled tea. These forms have no relation to the Chinese name 酸茶.
Cultural significance:
- A revered product. Japanese researchers recorded stories of residents of the village of Mangjing (芒景, Mángjǐng) — according to their information, the capital of a Bulang “kingdom” (布朗王国, Bùlǎng wángguó) that existed until the Cultural Revolution. According to these stories, sour tea there was made only by designated people, it was presented to the ruler, it was part of wedding customs, and touching the leaf by hand during making was forbidden — miyan was made only with the help of chopsticks. Elders of Mangjing said that miyan was given to important people, and they themselves did not even eat it. These are stories of one village, and they cannot be generalized to all Bulang.
- Gift and treat. The 1982 survey and the 1992 reference book call sour tea a gift that is exchanged; a popular publication of the state portal “Zhongguo wang” (中国网, Zhōngguó wǎng, 2024) — a gift and treat for guests.
- Food, not only a drink. Unlike most teas in the encyclopedia, Bulang sour tea is described above all as food: it is chewed, and according to the 2024 publication it is also used in cooking and eaten as a snack.

3. Botanical Description and Raw Material

Variety / Cultivar: Not named by any of the checked sources. A 2025 article says only that the leaf of the tea plant (Camellia sinensis) undergoes fermentation; the variety and local population are not specified.
Raw material: Descriptions differ, and they cannot be reduced to a single norm. The Japanese expedition of the 1990s saw only mature leaf. The 1992 reference book writes about young tender leaf. The publication “Zhongguo wang” (2024) — about coarser old leaf of old tea trees (古茶树, gǔ cháshù). For the 2021 samples, leaf was collected as “one bud and two leaves.” These are descriptions of different years, places and authors; the sources do not say what explains the differences.
Picking: According to the 1992 reference book and the 2024 publication — in May–June; according to the 1982 survey — in the seventh–eighth months (which calendar is not said in the quotation; the neighboring item of the same text about tea in bamboo is dated by the Dai calendar); the 1990s expedition found making almost all year round. Samples of the 2021 batch were taken from July to October — from laying down to the third month of aging.
Picking standard: There is no common standard. “One bud and two leaves” is the raw material of one studied batch, not a requirement of the style.
Requirements for raw material: Not formulated: no standard for Bulang sour tea has been found. Common to all descriptions is heat fixation of the leaf before fermentation.

4. Terroir and Growing Features

Region: The Bulangshan mountain area of Menghai County in southwestern Yunnan (in the English abstract of the Japanese article — Mt. Bulang); the 1992 reference book also names the Xiding and Bada mountains. The sources do not separately write which gardens the leaf for sour tea comes from; the 2024 publication mentions only old tea trees.
Growing altitude: There are no data on gardens for sour tea. The 1992 reference book writes only about people: the Bulang live mostly in high mountains, above 1500 m above sea level.
Soils: Not described in checked sources.
Climate: There are no climate descriptions specifically for sour tea. The 1992 reference book connects the time of making with the hot and humid summer season.
Place of fermentation: For this product, not only the garden is important, but also the place where the leaf ferments. In two of the villages described by the Japanese authors, the tube was buried in a pit — for example, in a corner of the yard; in the ground the clay sealing the mouth does not dry out, and the bamboo does not crack.

5. Production Technology

There is no single technology: no standard has been found, and descriptions of different years and villages differ. Common to all is fixation of fresh leaf by heat, packing into a bamboo tube and aging without air access. The density of packing, the method of sealing and burial in the ground differ in different descriptions.

Fixation (杀青, shāqīng): The leaf is heated by steam or boiled. Steam is described by the Japanese expedition in two villages of Menghai County, recorded by it as 弄養 and 曼班, and in a third village, recorded as 邦哈, for about 30 minutes; steam is also named by the summarizing description in the 2025 article. Boiling is described by the 1982 survey, the 1992 reference book, the 2024 publication, the Russian-language description of 2025 and the methods section of the same 2025 article — for its samples, the leaf was boiled for 20 minutes. In Mangjing, according to the Japanese description, the leaf was boiled in a large cauldron for about five minutes. Village names are given in Japanese recording; their Chinese correspondences have not been established, so no readings are given here.
Leaf preparation: According to the 2021 samples and the summary of the 2025 article, fresh leaf is withered before fixation. After fixation it is cooled, and according to the 2025 article it is also air-dried to reduce moisture.
No rolling: The 2025 article emphasizes that, unlike De’ang sour tea, Myanmar lahpet and Japanese awa-bancha, Bulang sour tea is not rolled before fermentation.
Packing into bamboo: In the villages 弄養 and 曼班, the Japanese expedition saw cooled leaf being densely packed into a bamboo tube about 10 cm in diameter and about 30 cm high, not reaching the edge by about 5 cm. In the village 邦哈, packing was loose. The 2024 publication writes that the tube is filled to the top, without voids.
Sealing: In the villages 弄養 and 曼班, the mouth is closed with a folded banana leaf, and on top it is plastered to the very edge with kneaded red clay. In the village 邦哈, the mouth is plugged with a banana leaf, not plastered with clay, and water is poured into the tube. The 2024 publication writes that the mouth is tightly sealed with banana leaves (芭蕉叶, bājiāo yè).
Fermentation (发酵, fājiào): In the villages 弄養 and 曼班, the tube is buried in a pit 15–30 cm deep and left for a period from several weeks to several months. In the village 邦哈, the tube is kept in a dark place, and in Mangjing the leaf was left for more than ten days without burial. Other descriptions name about a month in the ground (1982), more than a month in the ground after molding for ten plus days (1992), about two months (2024) and three months (summary of the 2025 article, its samples and the Russian-language description of 2025).
Drying (not always): According to the Russian-language description of 2025, after aging the tea is either dried or not; the dried one is steeped. The sources do not describe drying regimes. The 2021 samples were sun-dried for laboratory tasting — this is preparation for analysis, not a description of custom.

Where descriptions diverge: steaming or boiling; mature, young or coarse old leaf; dense or loose packing; clay, water or only leaves in the mouth; in the ground or in a dark place; from ten days to several months. The two-stage variant of the 1992 reference book — first molding in air, then burial — was not found in the field by Japanese researchers. The sources do not explain which of these differences are connected with the village and which with the era.

6. Organoleptic Characteristics

There is no standardized organoleptic evaluation of Bulang sour tea. Below is the little that researchers write, with an indication of what their observations refer to.

Appearance of dry leaf: The edible form is eaten directly from the tube, not dried, so it has no dry leaf. According to the Japanese description, when the tube is opened, the top layer of about 2 cm is covered with mold and browned — it is discarded. In the 2025 study, samples for tasting were sun-dried; with aging, their appearance and infusion browned noticeably. There are no descriptions of the dried drinking form in daily use in the sources.
Aroma of dry leaf: The edible form has no dry leaf; Japanese researchers note a fermentation smell in long-aged sour tea. There are no other aroma descriptions in checked sources.
Aroma of infusion: Not described in checked sources.
Taste: According to the 1998 Japanese article, long-aged sour tea has a light sourness, but all samples retain the taste of tea itself and especially strong astringency. In the 2025 study, tasters evaluated five attributes — bitterness, astringency, sweet aftertaste, sourness and “fermentation taste.” In unaged leaf, all five scores were lowest, and over three months of aging all five intensified to varying degrees; sourness was stronger in the second month than in the third. This is one series of samples from one village, and a taste profile for the style cannot be derived from it.
Color of infusion: In the 2025 study, the infusion of dried samples browned noticeably with aging. There are no other descriptions.
Wet leaf (spent leaf): Not described in checked sources.

7. Chemical Composition

In checked sources, analyses of Bulang sour tea exist only in two works of one group of authors, and their results refer to the studied samples, not to sour tea in general. The 2025 work is based on the 2021 samples from Banzhang village; on which samples the 2024 work is based cannot be established from its abstract.

Microorganisms: According to a 2024 article in the journal Food Chemistry (abstract read), in the fermenting tea lactic acid bacteria Lactobacillus plantarum, unclassified enterobacteria, yeasts — unclassified Debaryomyces and Candida metapsilosis, — and molds Cladosporium sphaerospermum and unclassified Aspergillus predominated.
Organic acids: According to the same work, the total content of short-chain fatty acids increased with fermentation, with acetic acid being most abundant. According to the 2025 article, titratable acidity was highest in the second month of aging.
Polyphenols and flavonoids: According to the 2025 article, their total content, as well as soluble sugars, was highest in the second month.
Amino acids: The total content of free amino acids increased with aging (2025 article).
Microbial dynamics: Lactic acid and aerobic bacteria were most numerous in the second month, and fungal counts increased with aging (2025 article).
Antioxidant activity in vitro: Total antioxidant capacity and hydroxyl radical scavenging ability increased with aging, while ABTS and DPPH radical scavenging ability first increased slightly and then decreased. These are in vitro measurements, not effects on the organism.
Alkaloids, vitamins, minerals: There are no data on caffeine, vitamins and mineral composition of Bulang sour tea in checked sources.

8. Health Benefits

There are no verified data on the effects of Bulang sour tea on health. The 1992 Chinese reference book, a 2023 ethnobotanical study and a popular 2024 publication attribute medicinal action to sour tea, and the authors of the 2025 article formulate assumptions about possible benefits based on in vitro experiments. There are no human studies in checked sources, so such statements are not repeated here and are not presented as properties of the tea.

What is reliably known about sour tea relates not to health but to custom: it is eaten, offered as a treat and exchanged as a gift. The chemical measurements from section 7 were made in the laboratory on samples from one village and say nothing about effects on the organism.

9. Steeping

The main method of consumption described by researchers is not steeping but eating. A 2023 ethnobotanical study conducted in ten Bulang villages of Menghai County says directly that sour tea is not steeped with boiling water but chewed.

How it is eaten: The pickled leaf is taken from the tube, chewed and swallowed; the 1992 reference book writes that it is thoroughly chewed in the mouth. The publication “Zhongguo wang” (2024) adds that sour tea is used in cooking, and some eat it as a snack.
Process (edible form, according to the Japanese description):
1. Dig up the tube and remove the clay and banana leaves from the mouth.
2. Remove and discard the top layer of about 2 cm — moldy and browned.
3. Take out the leaf and eat it.
4. What is not eaten is closed again with a banana leaf; sometimes the tube is buried again.
Drinking form: The publication “Zhongguo wang” (2024) writes that sour tea can be steeped and drunk; the Russian-language description of 2025 — that after aging part of the tea is dried and steeped like ordinary tea. The 1998 Japanese article, the 2023 ethnobotanical study and the 1992 reference book do not mention a drinking form.
Water temperature, amount of tea, teaware: The sources do not give household regimes — proportions, temperature, time, teaware — and the tea class from which common practice could be taken is not established. Therefore no recipe is given here.
Laboratory steeping: For tasting according to standard GB/T 23776-2018, the 2025 researchers poured 150 ml of boiling water over 3 g of sun-dried sour tea for 5 minutes. This is an evaluation method, not a recommendation and not a tradition.

10. Storage

According to Japanese descriptions, sour tea is stored in the same tube in which it fermented. According to the observations of the Japanese expedition, in villages where the tube is buried, in the ground the clay on the mouth does not dry out and the bamboo does not crack. After opening, the top moldy layer is discarded, what is not eaten is closed again with a banana leaf and one tries to eat it quickly, and sometimes the tube is buried again. The sources do not write about storing the dried form or whether it changes over time.

11. Price and Counterfeits

There is no information on sales, prices and counterfeits of Bulang sour tea in checked sources: all descriptions refer to home production and research samples.

How not to confuse:
- Name without the people. 酸茶 without indicating the people may mean De’ang sour tea (德昂族酸茶, Dé’ángzú suānchá) from Dehong Prefecture (德宏, Déhóng). This is a product of another people and another technology.
- Rolling. The technology of De’ang tea, according to the description of the national heritage list, includes rolling, anaerobic fermentation, pounding, shaping and drying; Bulang sour tea, according to the 2025 article, is not rolled.
- Standards. The local standards of Dehong Prefecture for sour tea are written for De’ang tea, not for Bulang tea, and both are repealed.
- Tea in bamboo. A bamboo tube by itself does not make tea sour: “tea in bamboo” (竹筒茶) is roasted leaf baked in a tube, without fermentation.
- Mark. Neither a standard nor a geographical indication has been found for Bulang sour tea, so authenticity cannot be checked by document or mark.

12. Interesting Facts

The Chinese name 酸茶 is built on the model of names of fermented products — 酸菜, 酸鱼, 酸肉: pickled tea is called “sour,” like fermented vegetables, fish and meat.
The Bulang themselves, according to the records of Japanese researchers, call this tea “miyan” — the same word as pickled tea of Northern Thailand and Northwestern Laos.
In the village of Mangjing, miyan, according to the stories of elders, was given to important people, and they themselves did not even eat it; touching the leaf by hand during making was forbidden.
In the 1982 Chinese survey, sour tea is described next to loose tea and “tea in bamboo” — as a separate way of making tea among the Bulang.
In the villages described by Japanese researchers, when opening the tube, the top two centimeters of tea, covered with mold and browned, are discarded — the leaf underneath is eaten.

13. Comparison with Similar Teas

De’ang sour tea (德昂族酸茶, Dé’ángzú suānchá): A product of another people and another prefecture — Dehong. According to the description of the national heritage list, its technology includes rolling, pounding and shaping; it distinguishes a food form — wet fermented tea for dishes — and a drinking form, which is dried and steeped. The craft was added to the national intangible heritage list in 2021 (applicant — Mangshi, 芒市, Mángshì). De’ang sour tea is mentioned in the article “Dehong Gushu Lü Cha.”
Tea in bamboo (竹筒茶, zhútǒngchá; 竹筒香茶, zhútǒng xiāngchá): According to the 1982 survey, among the Bulang this is roasted leaf that is packed hot into a tube and baked by the hearth, without fermentation; the same text describes sour tea separately. About it — in the articles “Naka” and “Yunnan Lücha”; pressed in bamboo and non-fermenting paka tea — in the article “Paka Cha.”
Bulangshan pu-erh: The same region and the same people, but a different product — about it in the articles “Bulangshan” and “Bulangshan Shu Bing.” Japanese researchers assign pu-erh to teas that ferment in air mainly under the action of mold, and sour tea to teas of anaerobic fermentation.
Dark tea (黑茶, hēichá): According to standard GB/T 30766-2014, it is defined through rolling and wet piling; this definition does not match the descriptions of Bulang sour tea. About the class — in the article “Hei Cha.”
Lahpet, miang, awa-bancha: Myanmar, Thai-Lao and Japanese pickled teas of the same fermentation type. These are not Chinese teas, and comparison with them here is only for understanding the technology. A Japanese author of 1996 considers “tea that is eaten” to be not unique to the Bulang but common with Thai “chewing” and Myanmar “eating” tea.

In conclusion:

Bulang sour tea is a leaf that is not rolled but heated, sealed in bamboo and left to ferment without air, most often in the ground. It is above all eaten — chewed directly from the tube, after removing the moldy top layer; according to some descriptions, it is also steeped and drunk. Raw material, terms and methods of sealing differ in the sources, there is no standard, and its place among the six classes of Chinese tea is not established by technology.

Researchers of the 1990s found this custom among the Bulang around Bulangshan, and in Mangjing they were told that miyan was once presented to the ruler. A 2025 study examined its fermentation on samples from one village, but much remains unknown: how and where it is made now, how the drinking form is dried and steeped, what taste can be called typical. For those interested in tea as part of the way of life of a mountain people, Bulang sour tea shows that tea leaf in Yunnan can be not only a drink but also food.

Sources

Standards

GB/T 22111-2008
GB/T 23776-2018
GB/T 30766-2014
DB5331/T 35-2021
DB5331/T 39-2023

Documents and publications

Dynamics Changes in Physicochemical Properties, Antioxidant Activity, and Non-Volatile Metabolites During Bulang Pickled Tea Fermentation — Foods (MDPI), vol. 14, no. 5 (2025), art. 878; DOI 10.3390/foods14050878; PMID 40077581; PMCID PMC11898713; Zhou J., Chen L., Zhang F., Foo H., Cao Z., Lin Q. (College of Food Science and Technology); received 2025-02-12, accepted 2025-02-25, epub 2025-03-04; CC BY
中国・雲南省西南部の無塩漬物茶「酸茶」 / Non-Salted Pickled Tea (Sour Tea) in South-East Yunnan in China — Journal of Home Economics of Japan (日本家政学会誌), vol. 49, no. 8 (1998), pp. 907–915; DOI 10.11428/jhej1987.49.907; 難波敦子 (Atsuko Nanba), 宮川金二郎, 大森正司, 加藤みゆき, 田村朝子, 斎藤ひろみ
Ethnobotanical study on medicinal plants used by Bulang people in Yunnan, China — Journal of Ethnobiology and Ethnomedicine, vol. 19 (2023), art. 38; DOI 10.1186/s13002-023-00609-0; PMCID PMC10486041; Zhou H., Zhang J., Kirbis B. S., Mula Z., Zhang W., Kuang Y., Huang Q., Yin L.; epub 2023-09-07
東南アジア大陸諸民族と茶の文化 —檳榔との比較民俗学的研究 — 比較民俗研究 (Comparative Folklore Studies, University of Tsukuba), no. 14 (1996/9), pp. 77–105
Changes in microbial diversity and volatile metabolites during the fermentation of Bulang pickled tea — Food Chemistry, vol. 458 (2024), art. 140293; PMID 38970959; Zhou J., Chen L., Foo H. L., Cao Z., Lin Q.; first publication 2024-07-01 (Europe PMC)
Making “Senses”: The qualia of Pu’er tea and sensorial encounters between tea producers and traders in southwest China — Journal of Material Culture, vol. 28, no. 1 (2023; online 2022-08-01), pp. 40–62; CC BY 4.0
GB/T 30766-2014 茶叶分类 — 国家标准 (SAC/AQSIQ)
GB/T 22111-2008 地理标志产品普洱茶 — 国家标准
德昂族酸茶制作技艺 (国家级非物质文化遗产代表性项目名录) — 中国非物质文化遗产网·中国非物质文化遗产数字博物馆
dbba.sacinfo.org.cn
石榴籽·同心圆 | 布朗族：从千年茶农到世界遗产守护者 — 中国网 (China.org.cn), 2024-05-21
“城市出逃计划”启动！第十二届勐海（国际）茶王节带你嗨翻整个国庆！ — 中国日报网, 2023-09-01

Full list — on the Sources page