7542 qīng bǐng · thetea.app

7542 is the most famous 唛号 (màihào, recipe code) of pressed sheng pu-erh, produced by the Menghai Tea Factory (勐海茶厂, now the 大益 Dàyì brand). In the market, it serves as a systemic benchmark: the taste, price, and aging behavior of nearly all other young Qing Bing cakes are measured against it.

1. Classification and Origin:

Type: sheng pu-erh (生普, pressed “green”/raw cake — 青饼, qīng bǐng).
Category: CHINA-PUERH TEA — blended (not single-mountain) pressed pu-erh.
Origin: Menghai Tea Factory (勐海茶厂, now the 大益 Dàyì brand), Menghai (勐海) area and the broader Yunnan region.
Recipe Code (唛号, màihào): 7542 — the code system was introduced by large factories starting in 1976 and is read strictly by position. Four digits denote a pressed tea (five digits denote loose leaf):
- [1–2] 75 — the year the recipe was established (1975), not the production year of a specific cake;
- [3] 4 — the grade (tenderness class) of the main raw material according to the Menghai grading scale;
- [4] 2 — the factory number: 2 represents 勐海 (Menghai).
Crucially important: 唛号 is a recipe-blend formula, not a production date or a marker of storage duration. The same 7542 has been pressed for decades, and batches from different years vary in raw material, pressing style, and degree of aging, while remaining “the same recipe.”
Neighboring codes from the same factory: 7572 (the benchmark shu cake, shú bǐng) and 8582 (a coarser sheng cake based on a 1985 recipe, commissioned by the Hong Kong firm 南天).

2. History and Cultural Significance:

The 7542 recipe dates back to 1975 — a period when major state-owned factories systematized their blends under unified 唛号 codes.
Against the backdrop of antique categories — 号级茶 (pre-1950, private trading houses like 同庆, 宋聘, 福元昌) and 印级茶 (中茶, 1950s–70s, “Red”/“Green” Mark) — 7542 represents the industrial, reproducible era, where value is defined not by the uniqueness of a single village, but by the stability of a recognizable recipe.
In the market typology of sheng pu-erh, 7542 occupies the mid-tier segment as a “workhorse” and a point of reference. On one side are mass-market formats (龙珠 pearls, budget cakes); on the other are premium and collectible 名寨纯料 (míngzhài chúnliào): single-mountain teas from 老班章 (Lao Banzhang, Bulangshan area), 冰岛 (Bingdao, Mengku), 易武 (Yiwu) with its scarce terroirs like 薄荷塘, 曼松 (imperial tribute), and 景迈 (Jingmai Mountains). If these teas sell the “character of a place,” 7542 sells the reliability of a recipe.
A legendary example is the “88 Qing Bing” (bābā qīng bǐng): batches of 7542 from approximately 1988–1991, aged under Hong Kong conditions. This name became a symbol of a successfully aged standard recipe and one of the most frequently cited cases in the culture of aging sheng pu-erh.

3. Botanical Description and Raw Material:

Variety/Cultivar: Yunnan large-leaf tea bush (云南大叶种, yúnnán dàyèzhǒng).
Raw Material: maocha (毛茶) — loose 晒青毛茶, undergoing the classic sheng pu-erh production cycle.
Blend, not Single-Mountain: 7542 is not 纯料 (chúnliào), but a blended tea. The master blender assembles leaves from different areas of Menghai (勐海) county and the wider Yunnan region to maintain a consistent taste profile year after year, regardless of the caprices of a single harvest.
Tenderness Class: The digit “4” in the code indicates relatively tender, but not the top-tier, raw material: leaf material fine enough for aromatics and structure, but with a proportion of more mature material that gives body density and potential for long aging. It is precisely this balance — not the utmost tenderness of buds — that makes the recipe stable in storage.

4. Terroir and Cultivation Features:

7542 is not a single-mountain tea (not 纯料 chúnliào), but a blended tea. Its philosophy is the opposite of the trend for “pure raw material from one village.”
Raw material is collected from different areas of Menghai (勐海) county and the wider Yunnan region to maintain a consistent taste profile year after year, regardless of the caprices of a single harvest.

5. Production Technology:

The basis is the Yunnan large-leaf tea bush (云南大叶种, yúnnán dàyèzhǒng), whose maocha (毛茶) undergoes the classic sheng pu-erh production cycle:

Plucking and withering;
Fixation-”killing the green” (杀青, shāqīng) — light, at a low temperature, to preserve active enzymes for subsequent aging;
Rolling (揉捻);
Sun-drying (晒青, shàiqīng) — resulting in loose 晒青毛茶;
Blending according to the 7542 recipe, steaming, and pressing into a standard cake (饼, bǐng), traditionally around 357 g;
Slow air-drying and packaging in thin paper wrapping.

The key difference between Qing Bing and shu cake is the absence of artificial accelerated fermentation (渥堆, wòduī). Sheng is a “green” (青, qīng) cake that ferments naturally, over years and decades, gradually transforming from a bright, herbaceous-bitter young tea into a soft, dark, multi-layered aged pu-erh.

6. Organoleptic Characteristics:

Young 7542 — a typical portrait of Menghai sheng: clear bitterness (苦, kǔ) and astringency (涩, sè), quickly followed by returning sweetness (回甘, huígān) and salivation (生津, shēngjīn). The aroma features dry grass, a light smoky hint, citrusy freshness; the liquor is transparent-golden.
Evolution through Storage: with years of proper storage, the profile shifts — sharp bitterness recedes, and notes of dried fruit, wood, honey, and “old library” (陈香, chénxiāng) emerge; the liquor darkens to amber and orange-red; the body becomes oily. It is precisely the predictability of this aging curve that made 7542 a foundational asset of the collection market: it is bought “for the years ahead.”

9. Brewing:

7542 opens up best using the gongfu method (gōngfū):

Ware: Yixing teapot or gaiwan (盖碗);
Ratio: approximately 7–8 g per 100–120 ml;
Water: close to 100 °C;
Mandatory rinse: 1 (for young cakes) — 2 (for aged ones) short rinses to “wake up” the pressed leaves;
Infusions: the first ones for 5–10 seconds, then gradually increasing the time; a quality 7542 sustains many infusions, smoothly releasing its sweetness.

Brew a young cake slightly shorter and cooler to tame the bitterness; an aged one — longer, to unfold its depth.

10. Storage:

Sheng ferments naturally, over years and decades, gradually transforming from a bright, herbaceous-bitter young tea into a soft, dark, multi-layered aged pu-erh.
The predictability of its aging curve made 7542 a foundational asset of the collection market: it is bought “for the years ahead.”
A classic example of successful aging is the “88 Qing Bing” (bābā qīng bǐng): batches of 7542 from approximately 1988–1991, aged under Hong Kong conditions.

11. Price and Counterfeits:

How to distinguish and avoid mistakes:

唛号 ≠ year. Seeing “75” in the code, do not consider it the production date: it is the year the recipe was created. The actual year of a batch is determined by the packaging, the inner ticket (内飞/内票), and the character of the leaves.
7542 is sheng (青饼), not shu. Do not confuse it with the shu benchmarks from the same factory: 7572 and 7581 are artificially fermented “ripe” teas. Signs of sheng are greenish-brown dry leaves, a golden young liquor, lively bitterness, and returning sweetness; shu has dark-brown leaves, a red-black liquor, an earthy-sweet profile without astringent bitterness.
The factory indicated by the digit “2”. The concluding “2” assigns the recipe to Menghai/大益. Codes with “1” (昆明/中茶), “3” (下关), “4” (普洱) denote other producers and different stylistic approaches (for example, 下关 is famous for pressed “iron cakes” 铁饼 and 沱茶 varieties).
A blend, not single-mountain. Do not expect “terroir” purity of a single village from 7542 — its strength lies precisely in a balanced blend that maintains a consistent profile from batch to batch.

12. Interesting Facts:

7542 remains the pivotal point through which it is most convenient to enter the world of sheng pu-erh: a clear logic of 唛号, transparent “green” processing without accelerated fermentation, and a taste benchmark refined over decades, by which both one’s own palate and the entire rest of the 青饼 market are calibrated.
The standard 7542 cake traditionally weighs about 357 g.
The name “88 Qing Bing” (bābā qīng bǐng) became one of the most frequently cited cases in the culture of aging sheng pu-erh.