Běichuān táizǐ chá (北川苔子茶) is a green tea of Beichuan Qiang Autonomous County (北川羌族自治县), Mianyang prefecture-level city, in the northwest of the Sichuan Basin. It is named after the local tea bush — according to provincial publications, known here since the Tang and Song dynasties. The product has been protected as a geographical indication since 2009; the Mianyang standard of 2022 defines it as a green tea of two shapes — flat and curled.
1. Classification and Origin
- Type: Green tea (绿茶, lǜchá): this is how the product is defined in the standard DB5107/T 99-2022.
- Category: A mountain green tea of northwestern Sichuan; geographical indication product (2009).
- Shapes: Flat tea (扁形茶, biǎnxíng chá) and curled tea (卷曲形茶, juǎnqūxíng chá).
- Origin: China, Sichuan Province (四川, Sìchuān), Mianyang prefecture-level city (绵阳, Miányáng), Beichuan Qiang Autonomous County (北川, Běichuān).
- Protection zone: Approved by announcement No. 107 of 2009 of the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ). The 2022 standard describes the same zone through nine present-day units of the county: the towns of Qushan, Leigu, Tongquan, Chenjiaba, Guixi and Yuli and the townships of Xuanping, Duguan and Baini. The 2009 announcement named eleven units; I have not checked the difference in the count.
- Geographic coordinates: No data found in the sources consulted.
2. History and Cultural Significance
- History:
- A legend of antiquity. The county procuratorate writes in a 2025 publication that under the Tang the local tea was “tribute” tea, and associates with the area around present-day Beichuan the “green Changming” (绿昌明) from Bai Juyi’s poem “春尽日”: “渴尝一碗绿昌明” — “in my thirst I tasted a bowl of green Changming”. It cites no primary sources.
- 1975. According to Sichuan Online, terraces for tea began to be laid out on the slopes.
- 2008–2009. The earthquake of 12 May 2008 almost stopped tea production; in 2009, during reconstruction, cooperatives began to be set up. In the same year AQSIQ, by announcement No. 107, took Běichuān táizǐ chá under protection as a geographical indication product.
- 2020. Since October a county regulation on the protection of old 北川苔子茶 bushes has been in force.
- 2022. On 24 March the Mianyang Administration for Market Regulation published the standard DB5107/T 99-2022 “地理标志产品 北川苔子茶”; it came into force on 1 June.
- 2023. The Ministry of Agriculture and Rural Affairs included the Běichuān táizǐ chá mixed-planting system (复合栽培系统) in the seventh batch of China’s important agricultural heritage; in January 2025, according to Sichuan Online, it entered China’s preliminary list for the FAO agricultural heritage program.
- 2026. The China National Intellectual Property Administration (CNIPA) granted enterprises the right to use the special mark.
- Name: “Běichuān” (北川) is the name of the county; “táizǐ chá” (苔子茶) is the name of the local bush. According to China National Radio (2026), the name was given for the appearance of the shoot: the long internodes and juicy stems resemble the vegetable flower stalks 菜苔 (càitái).
- Cultural significance: The heritage system is one of mixed planting: according to Sichuan Online, potatoes, maize, soybeans and vegetables are planted between the wide rows of old bushes. The saying “大禹门前树，千年苔子茶” — “a tree at the gate of Yu the Great, a thousand-year-old táizǐ chá” — is cited by China National Radio.
3. Botanical Description and Raw Material
- Variety / Cultivar: The local population 苔子茶. The county procuratorate describes it as a branch that developed over a long time from wild tea trees: cold-resistant, with a sturdy bud and a thick leaf. According to the same publication, there are many old bushes in the county, the oldest more than 700 years old; China National Radio (2026) gives more than 1100 years.
- Varieties permitted by the standard: The local population, the 鸠坑 (Jiūkēng) population and small- and medium-leaf clonal varieties such as 名山213 (Míngshān 213) and 福选9号 (Fúxuǎn 9). Under the standard, the name 苔子茶 does not require raw material from the local bush only.
- Harvest dates: From late February to late June; whole buds before Qingming, shoots with leaves before Guyu.
- Harvest standard: For flat tea — a whole bud; for curled tea — from a bud with one to a bud with two unfolding leaves. The leaf is picked by “lifting the hand” (提手采), without pinching or tearing.
4. Terroir and Cultivation Features
- Growing altitude: According to the standard — 650–1500 m. The county procuratorate writes of forests at 1000–1800 m; I have not resolved the discrepancy.
- Climate: According to the standard — the humid subtropical monsoon climate of the basin: mean annual temperature 15.6 °C, frost-free period 286 days, precipitation 1287.5 mm, sunshine 902.2 hours a year.
- Soils: Predominantly gravelly, then loams and clays, strongly skeletal; pH 4.5–6.5. The standard requires a layer of yellow soil of at least 50 cm with organic matter of not less than 1.5 %.
- Plantings: The standard prescribes planting protective forest belts around the gardens and shade trees in the gardens.
- Scale: According to Sichuan Online, by November 2022 — more than 90,000 mu of gardens.
5. Production Technology
The standard sets two process schemes — according to the shape of the tea.
- Flat tea: spreading (摊放, tānfàng) → fixation (杀青, shāqīng) → straightening of the leaf (理条, lǐtiáo) → heating to bring out the aroma (提香, tíxiāng) → sorting (筛选, shāixuǎn) → packing.
- Curled tea: spreading → fixation → rolling (捻揉, niǎnróu) → drying (烘干, hōnggān) → final pan-drying with aroma heating (炒干提香, chǎogān tíxiāng) → sorting → packing.
Drying of curled tea according to the standard:
- First drying: 110–130 °C, about 4–7 minutes.
- Slow drying: The pan temperature is lowered to about 80 °C and the tea is dried to a moisture content of about 10 %.
- Final drying with aroma heating: 120–130 °C, until the leaf crumbles into powder when squeezed between the fingers.
The standard gives no parameters for flat tea.
6. Organoleptic Characteristics
Requirements of the standard DB5107/T 99-2022 for the two shapes.
- Dry leaf appearance: Flat — straight, even, yellow-green with luster (扁直，黄绿、有光泽). Curled — tightly curled, with visible tips, green and moist-glossy (紧结卷曲、显锋苗，绿润).
- Dry leaf aroma: Not described in the standard; no data found in the sources consulted.
- Liquor aroma: Flat — high and lasting (香高持久). Curled — clean and lasting (清香持久).
- Taste: Flat — fresh and mild (鲜醇). Curled — mild, full, with a sweet aftertaste (醇厚回甘).
- Liquor color: Flat — tender yellow and bright (嫩黄明亮). Curled — tender green and bright (嫩绿明亮).
- Spent leaves (wet leaves): Flat — whole buds, yellow-green and bright (全芽、黄绿明亮). Curled — buds with leaves open out like a flower, green and glossy (芽叶成朵、绿亮).
7. Chemical Composition
Physicochemical requirements of the standard for the finished tea (mass fraction):
| Indicator | Requirement |
|---|---|
| Moisture | not more than 6.5 % |
| Water extract | not less than 40.0 % |
| Polyphenols | not less than 13.0 % |
| Catechins | not less than 8.0 % |
| Free amino acids | not less than 3.0 % |
| Caffeine | not less than 4.0 % |
| Total ash | not more than 7.5 % |
| Fines | not more than 1.0 % |
These are the standard’s thresholds, not measurements of a particular tea; the figures were checked against images of the pages.
8. Brewing
Class practice for green tea.
- Water temperature: 80–85 °C; for flat tea from whole buds — closer to 80 °C.
- Tea amount: 3 g per 150 ml.
- Teaware: A glass tumbler or a white gaiwan.
- Process: Warm the teaware, pour the water down the side, first infusion — after 40–60 seconds, drink while leaving a third of the liquor, and top up; two or three repeat infusions.
9. Storage
The standard requires a cool, dry and clean warehouse free of foreign odors; shelf life — not more than 18 months. At home — class practice: airtight packaging, a refrigerator at 0–5 °C, away from light and moisture; best drunk within a year.
10. Price and Counterfeits
No price data found in the sources consulted.
- How to avoid counterfeits:
- Look for the special geographical indication mark.
- Check that the producer is from Beichuan County.
- Remember that the name does not guarantee raw material from old bushes.
- According to the county procuratorate (2025), there is tea bought elsewhere and packaged as “北川苔子茶”.
11. Interesting Facts
- One name covers two shapes that look different: a flat tea from whole buds with a yellow liquor and a curled tea with a green one.
- The standard limits caffeine from below — not less than 4.0 %.
12. Comparison with Other Teas of Sichuan
- Emei Zhuyeqing (峨眉竹叶青): A flat tea of Mount Emei; for Běichuān táizǐ chá the flat shape is only one of two.
- Mengding Ganlu (蒙顶甘露): A curled tea of Mount Mengding — the closest neighbor in appearance to the curled shape.
- Guosheng Cha (国胜茶): A mountain green tea of the south of the province with a geographical indication.
- Dazhu Baicha (大竹白茶): A tea of eastern Sichuan from the introduced light-leaf variety 白叶一号 — the opposite case: there, a young introduced industry; here, an old local population.
In Conclusion:
Běichuān táizǐ chá is a green tea of a Qiang county in northwestern Sichuan, named after the local bush with centuries-old specimens. The 2022 standard describes two shapes: a flat one from whole buds with a tender yellow liquor and a curled one with a clean lasting aroma and a sweet aftertaste. Protection since 2009, the regulation on old bushes and the status of agricultural heritage preserve both the bush itself and the farming around it.
Sources
Standards
Geographical indication
Full list — on the Sources page