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Tea Roasting: Techniques, Functions, Equipment & Top English Blogs

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Deli Agricultural Machinery Wows Attendees with New Matcha Stone Mill Innovations at 2026 Xiamen International Tea Packaging Design Exhibition

Deli Agricultural Machinery Wows Attendees with New Matcha Stone Mill Innovations at 2026 Xiamen International Tea Packaging Design Exhibition

2026-04-19 13:24:17

Quanzhou Deli Agricultural Machinery showcases its new matcha stone mill series (Black Gold, Bluestone, and ball mill models) at the 2026 Xiamen Tea Expo, earning high praise from global tea industry professionals.

How to Troubleshoot Uneven Moisture Content During Tea Drying

How to Troubleshoot Uneven Moisture Content During Tea Drying

2026-04-17 08:08:18

Discover technical solutions for uneven moisture in tea drying. Learn how to troubleshoot airflow, calibrate sensors, and optimize batch loads for perfect tea processing.

Mastering Tea Processing: The Essential Guide to Tea Rolling

Mastering Tea Processing: The Essential Guide to Tea Rolling

2026-04-15 16:40:42

Discover the art and science of tea rolling. Learn about different rolling classifications, techniques to improve tea quality and efficiency, and the best tea rolling machines for your production.

Green Tea Withering: Classification, Tips to Boost Quality & Efficiency, Top Machine for Tea Producers

Green Tea Withering: Classification, Tips to Boost Quality & Efficiency, Top Machine for Tea Producers

2026-04-15 15:20:56

A poorly executed withering process can lead to irreversible defects: red stems, uneven flavor, lost aroma, or low production efficiency. In this guide, we break down the classification of green tea withering methods, share actionable tips to boost both quality and efficiency, and recommend a professional, versatile withering machine for modern tea producers.

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Tea Roasting: Techniques, Functions, Equipment & Top English Blogs

2025-10-27 11:20:08

1. Tea Types: Roasting Details & Functions

  • Green Tea: 80-90℃ (electric pan), 30-45mins; stir every 15mins to avoid scorching . Function: Inactivates polyphenol oxidase to retain grassy freshness and green hue.
  • Black Tea: 110-120℃ (gross fire, 15mins) → 85-95℃ (full fire, 10-20mins); cool 2hrs between stages . Function: Triggers theaflavin formation for rich, malty flavor.
  • Oolong (Yancha): Charcoal ashes heated 12hrs to white; 90-120℃, 4-36hrs (3 rounds max); flip every 30mins . Function: Develops "yan yun" (rock aroma) and reduces vegetal notes.
  • Pu’er: 60-70℃ (low-fire), 2-4hrs; spread 2cm thick . Function: Removes mustiness without destroying aging potential.
  • White Tea: 70-80℃, 1-2hrs; no stirring . Function: Preserves natural sweetness while evaporating excess moisture.

2. Core Functions

Evaporates 15-20% moisture (extends shelf life), inactivates enzymes (fixes flavor), and induces saccharification (adds sweetness) .

3. Equipment

  • Home: Purple Cloud Bamboo Roaster (110V, 30-120℃ adjustable, 500g batch) .
  • Commercial: Hondapack Rotary Roaster (electric/gas, ±1℃ precision, 50kg/batch); Delijx Gas Pot (20kg/batch, 360° heating) .

4. English Blogs

  • Valleybrook Tea: Step-by-step Wuyi oolong charcoal roasting .
  • Purple Cloud Tea House: Home roaster unboxing & troubleshooting .
  • Tea Epicure: Science of roasting (e.g., enzyme kinetics) .

5. Recommended English Books

  1. 《The Book of Coffee and Tea》(2nd Ed.)
    • Authors: Joel Schapira et al.
    • Publisher: St. Martin’s Griffin (1996)
    • ISBN: 9780312140991
    • Core: 313-page guide covering tea roasting techniques, flavor chemistry, and equipment .
  2. 《The Harney & Sons Guide to Tea》
    • Author: Michael Harney (Master Blender)
    • Publisher: Harney & Sons (272 pages)
    • Core: Roasting 工艺 for oolong/black tea, sensory evaluation methods .
  3. 《Tea Baby-Roasting Bible》
    • Source: hello-tea-baby.com (Free E-book)
    • License: Apache-2.0
    • Core: Home roasting tutorials for beginners (temp control, batch sizing) .