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The Ultimate Guide to Tea Fermentation Machines: Elevating Black and Oolong Tea Quality

The Ultimate Guide to Tea Fermentation Machines: Elevating Black and Oolong Tea Quality

2026-03-12 09:13:21

Learn how tea fermentation machines control temperature and humidity to perfect black and oolong tea. Discover the intelligent DELI ASSISTANT tea fermentation equipment for your tea factory.

The Ultimate Guide to Tea Rolling Machines: Boosting Quality & Efficiency

The Ultimate Guide to Tea Rolling Machines: Boosting Quality & Efficiency

2026-03-12 08:09:11

Discover how tea rolling machines enhance the flavor and appearance of your tea leaves. Learn about the rolling process and find the perfect DELI ASSISTANT tea rolling equipment for your factory.

DL-6CHBZ Chain Plate Tea Drying Machine: Multi-Fuel Efficiency for Tea Processing Plants

DL-6CHBZ Chain Plate Tea Drying Machine: Multi-Fuel Efficiency for Tea Processing Plants

2026-03-03 16:26:13

Explore the DL-6CHBZ Series Chain Plate Type Tea Drying Machine – multi-fuel (wood/coal/gas/electric) solution with 8-120m² drying area. Achieve 5-7% moisture content for high-quality tea efficiently.

DL-6CFX-40 Continuous Type Tea Winnowing Sorting Machine: Elevate Your Tea Quality Efficiently

DL-6CFX-40 Continuous Type Tea Winnowing Sorting Machine: Elevate Your Tea Quality Efficiently

2026-03-03 13:49:44

Discover the DL-6CFX-40 Continuous Type Tea Winnowing Sorting Machine – a high-capacity (500kg/h) solution for precise tea sorting. Elevate tea quality with efficient impurity removal and grading for tea processing plants.

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White Tea Withering

2022-01-19 14:31:14

Tea withering is the key process of white tea processing. Its purpose is to evaporate the moisture of fresh leaves, improve cell membrane permeability and enzyme activity, promote slow hydrolysis and oxidation of leaf contents, volatilize green odor, and develop tea through long-term withering. Fragrant, forming the natural appearance and inner characteristics of white tea.

The standard of white tea withering is when the buds and leaves are silvery white, the leaf color turns to gray-green or dark green, the leaf margins naturally shrink or droop, and the bud tips and tender stems are "lifted tail". The whole withering method is used to wither to the end of the hand-twisted tea leaves, and the moisture content reaches 8% to 9%. In case of rainy weather, the leaves turn green or dark green, and it should be baked in time when it reaches 60 to 70% dry.

The withering of white tea can be divided into three types: indoor withering, double withering and heating withering.

Indoor withering: It is required to have good indoor ventilation, no direct sunlight, and to prevent the intrusion of rain and fog, and the place is clean and hygienic. The quality of the white tea that is naturally withered with the tea withering rack is the best, and the withering time with the withering rack will be longer;

Duplex withering: On sunny days in spring and autumn, duplex withering can be used, that is, indoor withering is combined with sunlight withering, and sunlight withering should be lightly exposed when the sun is weak;

Warming and withering: in rainy weather, tea withering machines or heating and dehumidifying equipment should be used for withering, mostly hot air withering, which can shorten the production cycle of white tea production, improve production efficiency, and solve the difficulty of white tea withering in rainy days.

White tea takes a long time to wither, generally indoor natural withering takes 48~60h, not more than 72h, and hot air withering 20~36h.

Using a withering machine for withering can greatly shorten the withering time of white tea, and ensure the freshness and quality of tea leaves.