How to Ensure Clear & Bright Liquor of Chinese Green Tea

This full-process control solution targets gunpowder and chunmee green tea exported to North Africa and Central Asia for simmered mint tea. Turbid liquor is mainly caused by rain-soaked leaves, excessive fine dust, defective fixation/drying, damp storage and mixed impurities. Control measures cover fresh leaf raw materials, primary processing, refining, storage and brewing methods.

1. Raw Material Control at Source (Fundamental Step)

Reject rain-soaked and heavily dewy fresh leaves Waterlogged leaves contain excess intracellular moisture, producing fine suspended particles after processing and inevitably murky liquor. Only pick dry leaves harvested on sunny afternoons. Dew-covered leaves need 2+ hours of ventilation withering before processing. Severely rain-soaked leaves shall be downgraded separately instead of blending with qualified tea.

Remove impurities via sorting Mechanically and manually pick out yellow withered leaves, scorched leaves, insect-damaged leaves, silt, weeds and bark. Sand and dust suspended in liquor turn the tea grey and dull after brewing.

Balance tender and mature leaves Rotten and extremely coarse old stalks release excessive fibrous suspended matter when boiled. Tea for bright liquor adopts evenly mature one-bud-two/three-leaf raw materials; summer/autumn leaves for boiling resistance still require rotten leaf elimination.

Prevent soil contamination during picking Lay gauze on picking baskets and clean weeds on tea garden ground to avoid direct contact between leaves and mud.

2. Optimize Primary Processing to Eliminate Turbidity-Causing Substances

Proper withering to avoid reddish fermentation Spread leaves thinly with sufficient ventilation; thick stacking triggers partial fermentation and reddish liquor.

Adequate fixation to remove grassy and burnt impurities Even fixation eliminates harsh vegetal substances that cause grey liquor; stable wok temperature avoids scorched fragments which darken brewed tea. All burnt leaves are fully screened out.

Gentle rolling to cut down fine dust Adjust rolling pressure in stages: light pressure for shaping at early stage, reduced pressure later to prevent over-crushing leaf cell walls which generate ultra-fine tea powder, the top cause of cloudy liquor.

Two-stage drying with standardized moisture Adopt primary and final roasting to stabilize moisture content at 5.5%–6.5%. Over-humid tea turns sour and flocculent during long sea shipment; hastily high-temperature drying leaves inner dampness leading to post-storage suspended impurities.

3. Refining & Sorting: Sift Out Dust and Fragments (Core Foreign Trade Procedure)

Multi-layer sieve classification Separate intact long strips, broken tea and fine dust via sieves of different pore sizes. Only complete tea strips or pellets are reserved for export batches requiring transparent liquor, while fine dust is separated for low-grade markets.

Winnowing for dust removal Air blowing eliminates light yellow fragments and inorganic dust to retain heavy intact tea leaves, preventing grey turbid liquor.

Electrostatic stalk picking & manual sorting Fully remove coarse stalks, red and scorched flakes. Red stalks create dark brown murky liquor, failing North African market standards.

Standardized blending without low-grade dust Premium export tea shall never be blended with broken tea or fine ash; boiling-resistant batches only mix complete summer/autumn leaves without dust fragments.

4. Storage, Export Packaging & Sea Shipment Protection to Avoid Secondary Impurities

Dry, dust-free and dark warehouse storage Store tea on pallets to isolate ground moisture; regularly clean warehouse dust. Damp tea breeds microorganisms and generates flocculent precipitates after brewing.

Fully sealed moisture-proof packaging Line 50kg woven export sacks with thick PE inner film to block sea mist and condensed water inside containers.

Avoid high-temperature sealed transport Arrange containers away from sun-exposed decks; high heat and humidity deteriorate tea and release suspended pectin and organic acid particles.

Dust-free repacking Clean repacking equipment regularly and avoid mixing new tea with aged dusty stock.

5. Standard Brewing & Simmering Rules (Suitable for North African Mint Tea Custom)

Even top-quality tea turns turbid with improper simmering; share these guidelines with overseas buyers:

Quick rinse before formal brewing Pour boiling water over tea for 5 seconds then discard rinse water to wash away surface fine dust, delivering clear golden liquor for the second infusion.

Avoid dry boiling Add tea into cold water then heat gradually; boiling dry tea leaves first creates massive crushed residues.

Stand still before pouring Let brewed tea rest for 30 seconds so fine sediment sinks to the bottom; do not shake the pot while pouring.

Regular kettle cleaning Old tea scale accumulated in traditional copper mint kettles darkens fresh liquor; regular cleaning is required.

6. Quick Quality Inspection Standard

Dry tea check: No obvious black-grey dust left on palms after shaking; intact strips with minimal fine fragments.

Boiling test: Steep 3g tea in 150ml boiling water for 5 minutes; bright golden/yellow-green liquor without grey suspended particles or floccules.

Extended simmer test (North Africa standard): Simmer on low heat for 8 minutes; liquor remains transparent without grey/black discoloration, with only tiny sediment at the bottom and dense white foam.

Conclusion

Over 90% turbid liquor issues stem from ultra-fine tea dust, silt, deteriorated damp leaves, red and scorched fragments. Clear bright liquor can be steadily produced by rejecting rain-soaked rotten raw materials, minimizing dust during primary processing, thoroughly removing fragments via refining, storing tea in sealed dry conditions, and following standardized simmering methods. The finished tea fully meets North African demand for golden transparent mint tea.