霜降Frost's Descent
深入绿茶

Green tea in depth

Read green tea through its planting material, picked shoot and manufacturing choices. Six Chinese and Taiwanese examples connect the craft to practical buying, storage and brewing.

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Three identities behind one green tea#

A useful green-tea description identifies the plant, the style and the growing place separately. Longjing 43 was selected from the Longjing seed population and multiplied by cuttings; it is planting material, not a guarantee that a packet is West Lake Longjing. Conversely, a style name alone does not tell you which cultivar supplied the leaves.

Anji Baicha makes the distinction especially clear. Its pale spring shoots are associated with Baiye 1, but its spreading, heat fixation, shaping and drying make green tea. The word “white” in the name does not move it into the withered-and-dried category. When two packets look similar, ask for cultivar and growing site before attributing their differences to processing alone. See The tea plant and How to read a tea name.

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Key facts#

Plant and product
Longjing 43 is a selected clone; Longjing is a finished-tea name.
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Heat has different jobs
Fixation, shaping and final drying must be distinguished.
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Season is local
A pre-Qingming date is not a quality scale for every cultivar and region.
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Cold storage
Warm a sealed cold package before opening it to avoid condensation on the leaf.
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Harvest: an appropriate shoot, not simply the earliest date#

“Spring”, “first picking”, 明前 (before Qingming) and 雨前 (before Guyu) answer different questions. A calendar boundary says when; a bud-and-leaf description says what was picked. In Hangzhou’s 2025 announcement, West Lake Longjing 43 picking began on 20 March, while the seed population was expected later that month. These were local decisions informed by that year’s fields and weather, not permanent dates for green tea.

Other styles require a different shoot. The heritage account of Taiping Houkui describes sorting a larger picked shoot down to one bud and two leaves; Lu’an Guapian deliberately removes buds and stems to work with separate leaves. Both are associated with picking around Guyu. Tiny buds are therefore not a universal mark of the right material. Judge the picking against the named style, and compare season claims within a known place, cultivar and year.

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Read the heat treatment in stages#

Fixation, 杀青, applies heat early enough to limit enzymatic oxidation. It does not mean that no chemistry has occurred before the heat, or that all later changes stop. The craft may include spreading first. Shaping then gives the leaf a flat, curled, rolled or needle-like form, while drying removes further moisture; in a heated pan these jobs can overlap.

The familiar four names do not classify one identical stage. 蒸青 identifies steam fixation. In the China Tea Science Society’s account, 炒青 is chiefly pan- or drum-dried, 烘青 chiefly baked dry, and 晒青 sun-dried after fixation and rolling. A baked green tea can still be fixed in a pan. Sun-dried maocha may be drunk loose or enter further processing, including compressed tea. Ask which operation a process label describes before predicting the finished flavour.

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Cases 1–2: Longjing and Anji Baicha#

West Lake Longjing connects plant selection to a distinctive flat form. Its heritage record describes a repertoire of hand actions, adjusted during pan work, rather than a single rolling step. Compare Longjing 43 and seed-population lots only after recording site, picking date and maker. A comparison across different makers or dates cannot isolate cultivar. Flatness is visible; the claimed growing boundary still requires separate evidence.

Anji Baicha connects a pale-leaf cultivar with green-tea manufacture. The heritage process lists spreading, fixation and shaping, initial drying, cooling and further drying. It is a useful counterexample to both “white name means white tea” and “green tea is heated immediately after picking”. For tasting, compare aroma and texture at an equal measured dose; pale leaf colour alone is neither an age test nor a measure of how much flavour must enter the cup.

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Cases 3–4: Huangshan Maofeng and Taiping Houkui#

Huangshan Maofeng is a named baked green tea, not merely an anonymous base for scenting. Its heritage account describes pan fixation, gentle rolling and successive baking stages. Thus “baked” does not imply omission of the pan. It is a useful comparison with Longjing: document the different form and drying route before reducing any aroma difference to growing altitude.

Taiping Houkui, also from the Huangshan area, develops a very different outline. The heritage explanation describes selecting sturdy shoots, retaining one bud with two leaves, aligning the leaves around the bud and pressing them into shape before successive drying stages. Its imposing leaf size belongs to a material-and-craft system; it is not a reason to dismiss the tea as carelessly coarse. Use equal leaf mass, not equal-looking spoonfuls, when comparing Houkui with a compact small-leaf tea.

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Cases 5–6: Enshi Yulu and Sanxia Biluochun#

Enshi Yulu shows why Chinese green tea cannot be equated with pan fixation. Its heritage process uses steam, followed by cooling, heated shaping and drying; the resulting needle shape is a later achievement, not something that steaming alone produces. The account also describes separating incoming leaf by cultivar, grade and picking period. “Steamed” identifies one operation within a managed sequence.

Sanxia Biluochun in Sanxia, Taiwan, gives another reason to keep style and origin apart. The tea research station identifies Qingxin Ganzai and Qingxin Wulong among local planting materials and describes curled green tea made by heat fixation, rolling and drying. Makers may first rest the fresh leaves for several hours. This is a local production, not evidence of Dongting Mountain origin just because “Biluochun” appears on the packet. Record the cultivar and place, and treat any named aroma as a tasting prompt to test.

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Freshness is a history of exposure#

A harvest year cannot describe everything that happened after drying. For green tea, ask how the unopened reserve was packaged, where it was kept, when the current container was opened and whether a sample was repacked. These questions distinguish the leaf’s age from its exposure history. They are more informative than a “fresh” sticker alone.

Taiwan’s tea research station recommends small portions, a good moisture and air barrier, protection from light and separation from foreign odours. Keep a modest working portion and close the reserve. A decorative tin is useful only if its closure and inner packaging perform those jobs; transparent display storage sacrifices light protection. Note the opening date and compare the tea over time using the same preparation. Fading aroma is something you can observe, but neither that observation nor a bright leaf colour dates an unknown lot.

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Use cold storage without adding moisture#

For a cold reserve, package small sealed portions before putting them away. Taiwan’s official household advice explicitly uses delicate green teas such as Longjing and Biluochun as examples and warns against repeatedly freezing and thawing the same package. A refrigerator shared with food also requires an effective odour barrier. Cooling does not compensate for a leaking closure.

Bring a sealed portion out and allow it to approach room temperature before opening. Opening cold tea immediately can let water condense on it; the precaution concerns the leaf’s moisture, not a ritual waiting time. Keep the daily portion away from heat, sunlight and damp conditions. The appropriate quantity to buy depends on how quickly you drink it and how reliably you can protect the reserve. There is no single shelf-life number here that certifies every green tea or package. See Ageing and storage.

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Brew a comparison that can teach you something#

Water temperature is only one variable. Gong and colleagues tested eleven Chinese green teas from four provinces in 1999 and found different suitable temperature–time combinations depending on tenderness and rolling. Many samples performed well with boiling water under their test conditions; some tender, more heavily rolled teas also performed well at 80 °C with longer infusion. “Never use boiling water” therefore obscures the interaction. The paper’s accessible abstract does not supply a complete home recipe.

For your own comparison, weigh equal leaf portions, measure the water and keep vessel, water source and infusion time constant while comparing two temperatures. Then change time separately. Fully decant both, or record that leaves remain in the glass; those are different contact-time systems. Describe bitterness, drying astringency, aroma and body separately. A pleasant result at one dose does not disprove an unpleasant result at another. Use Brewing and Teaware and water to build a repeatable method.

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Evaluate the lot, then the story#

Build a small comparison around one question. To explore cultivar, seek similar site, date and craft; to explore storage, split one known lot; to compare two styles, accept that several variables will differ and describe the whole result. Photograph dry leaf and inspect the opened leaf after brewing, but keep appearance separate from provenance. A neat needle or flat leaf is a manufacturing observation, not proof of a named garden.

Record the actual package, harvest claim, maker, opening date and preparation beside your tasting notes. Ask whether an offered sample is from the same batch you would buy. Preference can legitimately favour a later picking or a less fashionable style; the useful conclusion is that this documented lot suits you. See Tasting vocabulary and how to evaluate for sensory vocabulary and Buying with confidence for checking claims. The six cases above are comparisons to investigate, not six fixed flavour signatures or a ranking of regions.

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Sources#

  1. Research reportsaccessed 2026-10-20

    Institutional account of single-plant selection from the Longjing population, propagation by cuttings and the former number Longjing 6043. Experimental yields and budbreak intervals do not establish universal performance.

  2. Government and public institutionsaccessed 2026-10-19
  3. Government and public institutionsaccessed 2026-10-20

    Heritage craft descriptions under 谷雨·茶饮 cover Houkui picking around Guyu, one-bud/two-leaf sorting, alignment, pressing and drying, and Guapian leaf-only material. They do not certify current GI boundaries or individual lots, or establish general health, nutrition or ancient-history claims.

Show all sources 13Show fewer sources
  1. Government and public institutionsaccessed 2026-10-20

    The 常溫保存 and 低溫保存 sections describe Longjing/Biluochun, small sealed packs, protection from odours, avoiding repeated freezing and thawing, and warming the closed container before opening. This does not establish a universal shelf life.

  2. Government and public institutionsaccessed 2026-10-20

    The Longjing craft section describes a repertoire of hand movements. Broad historical, oxidation and quality claims in the introduction do not establish universal properties.

  3. Government and public institutionsaccessed 2026-10-20

    Technical description of steam fixation, cooling, needle shaping and drying, and fresh-leaf separation. Origin legends, awards and exclusivity claims are not independent evidence of these processes.

  4. Reference worksaccessed 2026-10-19
  5. Government and public institutionsaccessed 2026-10-20

    Practical guidance on small sealed portions, clean dry storage and protection from moisture, air, light and odours; not a universal shelf-life or moisture-limit specification.

  6. Academic researchaccessed 2026-10-20

    Publisher abstract: eleven famous green teas from four provinces, temperature/time experiments; responses differed with leaf tenderness and rolling. No leaf-to-water ratio available in abstract, so no home recipe derived.