zhōng chá shú bǐng

Zhongcha shu pu’er (中茶熟饼, Zhōngchá shú bǐng) is an aged (artificially fermented) pu’er pressed into a cake form, released under the oldest and most recognisable Chinese tea brand “Zhongcha” (中茶, Zhōngchá). The brand belongs to the state-owned company that stood at the origins of the entire modern Yunnan pu’er industry, so this refers not so much to a single variety as to a whole style and product line. The raw material is large-leaf tea from Yunnan province (云南, Yúnnán), and the defining technology is wet piling (渥堆, wò duī), developed in the 1970s. The brand logo — eight “zhong” characters (中) surrounding a central “cha” character (茶) — is one of the most famous symbols in the history of pu’er. The tea is valued for its stable quality, recognisable “factory” taste and the historical significance of the brand.

1. Classification and Origin:

Type: pu’er (普洱茶, pǔ’ěr chá), aged/fermented subtype — shu pu’er (熟茶, shú chá).
Form: pressed cake (饼, bǐng), classic weight — about 357 g; traditionally seven cakes were packed into a stack (七子饼, qīzǐ bǐng).
Brand: “Zhongcha” (中茶, Zhōngchá).
Origin: Yunnan province, PRC.
Rights holder: China Tea Company, now “Zhongguo chaye gufen youxian gongsi” (中国茶叶股份有限公司), part of the state corporation COFCO (中粮集团, Zhōngliáng jítuán).

According to the national standard for pu’er (GB/T 22111-2008 “Product of geographical indication. Pu’er”), only tea made from Yunnan large-leaf sun-dried raw material within the established geographical region may be called pu’er. Products under the “Zhongcha” brand are produced at different factories and according to different recipes, therefore “Zhongcha shu pu’er” is rather a family of cakes united by brand and technology, not a single product.

2. History and Cultural Significance:

Founding of the company: the China Tea Company (中国茶业公司, Zhōngguó cháyè gōngsī) was established in 1949.
Trademark: the “Zhongcha” brand with the “eight zhong” logo (八中商标, bā zhōng shāngbiāo) was registered in the early 1950s.
Birth of shu pu’er: the wet piling technology was developed in the first half of the 1970s (around 1973–1975) at factories in Kunming (昆明茶厂, Kūnmíng cháchǎng) and Menghai (勐海茶厂, Měnghǎi cháchǎng).

Before the reforms and privatisation of the 1980s–1990s, almost all Yunnan pu’er destined for the domestic market and export was released under the single “Zhongcha” brand. The famous “marked” teas of the 1950s — “red mark” (红印, hóng yìn), “green mark” (绿印, lǜ yìn), “yellow mark” (黄印, huáng yìn), named after the colour of the central character 茶 on the wrapper — were, as a rule, raw (生, shēng) pu’er, but it was these that cemented the cult status of the brand. Aged shu cakes “Zhongcha” appeared after the mastery of the piling technology and became the benchmark of the “classic factory taste.”

3. Botanical Description and Raw Material:

Plant species: Camellia sinensis var. assamica, in the Chinese tradition — large-leaf variety (大叶种, dà yè zhǒng).
Raw material: sun-dried green maocha (晒青毛茶, shàiqīng máochá).
Leaf: large, leathery, with a high content of extractive substances, which is important for long-term fermentation.

Yunnan large-leaf tea is distinguished by a full-bodied infusion and a high proportion of polyphenols, making it suitable for both raw and fermented pu’er. The “Zhongcha” brand uses blending (拼配, pīnpèi) — mixing raw materials from different terroirs, harvests and leaf grades to achieve a stable profile from batch to batch.

4. Terroir and Cultivation Characteristics:

Region: Yunnan province, southwest China.
Main sourcing zones: Xishuangbanna prefecture (西双版纳, Xīshuāngbǎnnà), Pu’er city (普洱, Pǔ’ěr, formerly Simao), Lincang city (临沧, Líncāng), Baoshan (保山, Bǎoshān).
Plantation elevation: approximately 1000–2000 m above sea level.
Climate: subtropical and tropical monsoon, with a pronounced rainy season.

Yunnan lies roughly at latitudes 21–29° N; the southern tea areas of Xishuangbanna are located around 21–22° N. The combination of altitude, fog, rich soils and mild winters forms raw material with a dense infusion body. Since “Zhongcha” works with raw material from many areas, the specific terroir of a given cake depends on the recipe and is indicated on the packaging.

5. Production Technology:

Stage 1. Maocha production: plucking (采摘, cǎizhāi), withering (萎凋, wěidiāo), fixation of the green leaf by heating (杀青, shāqīng), rolling (揉捻, róuniǎn), sun-drying (晒青, shàiqīng).
Stage 2. Wet piling (渥堆, wò duī): the key operation that distinguishes shu from sheng pu’er.
Stage 3. Pressing: weighing, steaming, cake moulding, drying.
Stage 4. Packaging: wrapping paper (棉纸, mián zhǐ), inner ticket (内飞, nèifēi), insert (内票, nèipiào), stack (筒, tǒng).

During piling, maocha is gathered into heaps, moistened (洒水, sǎ shuǐ) and covered; due to the activity of microorganisms, primarily black aspergillus (黑曲霉, hēi qū méi) and yeasts, the temperature inside the heap rises to 50–65 °C. The heap is periodically turned (翻堆, fān duī) for uniformity. The process lasts approximately from several weeks to two months, depending on the recipe and degree of fermentation. The mass is then dried, sorted by grades, blended and steam-pressed into cakes.

6. Organoleptic Characteristics:

Dry leaf: dark-brown to reddish-brown, often with golden buds (金毫, jīn háo).
Infusion: from deep red-brown to dark chestnut; with ageing it becomes clearer and brighter.
Aroma: aged, “old” (陈香, chén xiāng) — woody-earthy, with notes of dried dates, sometimes camphor (樟香, zhāng xiāng) or warm grain.
Taste: soft, rounded, thick (醇厚, chún hòu), with low bitterness and astringency, a long sweet aftertaste (回甘, huí gān).

In young shu pu’er, a “pile taste” (堆味, duī wèi) may be present — a characteristic nuance of recent piling, which gradually fades during storage, giving way to a clean aged profile.

7. Chemical Composition:

Polyphenols: during fermentation, the content of catechins (儿茶素, ér chá sù) is noticeably reduced.
Pigments: thearubigins and especially theabrownins (茶褐素, chá hè sù) are formed, imparting a dark red-brown colour to the infusion.
Caffeine (咖啡碱, kāfēi jiǎn): preserved, although perceived softer than in green tea.
Polysaccharides and soluble sugars: give density and a sweetish note to the infusion body.

Wet piling effectively restructures the biochemistry of the leaf: active microbial and oxidative transformation of polyphenols reduces astringency and forms specific fermentation products responsible for the colour, “softness” and characteristic aroma of finished shu pu’er.

8. Health Benefits:

Digestion: shu pu’er is traditionally drunk after a heavy meal as a means of “easing the stomach.”
Thermal nature: unlike “cooling” raw pu’er, fermented pu’er is considered “warm” and gentle on the stomach.
Metabolism: there are studies on the influence of fermented pu’er on lipid metabolism; however, the results should not be interpreted as a guaranteed therapeutic effect.

The properties described reflect traditional views and preliminary scientific data and are not medical recommendations. The aged character and low astringency make this tea comfortable for regular consumption, including in the evening for people sensitive to astringent taste.

9. Brewing:

Vessel: gaiwan (盖碗, gàiwǎn) or Yixing clay teapot (紫砂壶, zǐshā hú); a clay teapot softens the infusion well.
Water: brought to a boil, 95–100 °C.
Ratio: approximately 7–8 g of leaf per 100–120 ml (around 1:15).
Rinse: a quick rinsing pour (洗茶, xǐ chá) once or twice for 5–10 seconds; the infusion is discarded.
Infusions: first brews 5–10 seconds, then the time is gradually increased; a cake withstands 10–15 or more infusions.

Before brewing, a piece is separated with a pu’er knife, taking care not to crumble the leaf. Rinsing not only “awakens” the pressed tea but also removes any possible pile taste in young shu. At later infusions, the tea can be boiled in a kettle on a stove (煮茶, zhǔ chá), yielding a thick, sweet infusion.

10. Storage:

Storage type: dry (干仓, gān cāng) storage is preferable to wet (湿仓, shī cāng).
Conditions: moderate temperature, relative humidity approximately 50–70 %, ventilation, absence of direct sunlight.
Odour isolation: pu’er easily absorbs extraneous aromas, so it is kept away from spices, cosmetics and the kitchen.

Shu pu’er has already undergone accelerated fermentation, so it changes during storage more slowly than raw pu’er, but over time the “pile taste” fades, the taste becomes cleaner, deeper and sweeter. Cakes are stored in their original paper; complete sealing is undesirable, as the tea needs minimal air exchange.

11. Price and Counterfeits:

Ordinary products: modern shu cakes “Zhongcha” from mass-market ranges cost approximately from several hundred to just over a thousand roubles per 357 g cake, depending on the raw material grade and age.
Aged and collectible batches: the price increases manyfold, and old factory cakes are sold as collectors’ items.
How to verify authenticity: attention is paid to the print quality of the “eight zhong” logo, the wrapper paper, the presence and appearance of the inner ticket (内飞) and insert, and the correspondence of the article code and recipe to the declared year.

The “Zhongcha” brand is one of the most counterfeited in the world of pu’er; claims of “old,” “rare” or “marked” tea are particularly risky. Dating by appearance is easily falsified, so expensive aged cakes should only be purchased from trusted sellers with a traceable history. For everyday tea, it is safer to rely on fresh factory batches from official ranges, rather than on “miraculously preserved” specimens at a suspiciously low price.

12. Interesting Facts:

Logo: eight characters 中 around a central 茶 became firmly established as the hallmark of China’s state tea trade.
Recipe system: in Yunnan cake codes, the first two digits usually denote the recipe year, the third — the leaf grade, the fourth — the factory number (for example, 1 — Kunming, 2 — Menghai).
Famous shu: products under the “Zhongcha” brand include one of the benchmark fermented pressed teas — the 7581 brick from the Kunming factory (brick form, not a cake, but the same origin).
Single brand of an era: for several decades, all Yunnan export and domestic pu’er production went under this very brand, making it the key reference point in the history of the category.

In Conclusion:

Zhongcha shu pu’er is not a single variety from one plantation, but a style and a whole family of cakes, united by the oldest Chinese tea brand, Yunnan large-leaf raw material and wet piling technology. It is precisely the products under this brand that largely set the standard for what is understood today as “classic factory shu pu’er”: dark infusion, soft dense body, aged woody-earthy aroma and predictable quality from batch to batch.

For an introduction to fermented pu’er, this tea is convenient due to its accessibility and stability, while for a collector it is historically important. A sensible approach is simple: take everyday cakes from fresh official ranges and evaluate them by taste, while treating “rare” and “old” specimens with caution, bearing in mind the scale of counterfeiting surrounding one of the most recognisable brands in the world of tea.

the teas described here are available from teamotea