email

Ripe Tea Pile-Fermentation Method

Home > Tea Production KnowledgeRipe Tea Pile-Fermentation Method

Hot Products

news

Revolutionize Tea Processing: Introducing the DQM-150 Continuous Matcha Ball Mill

Revolutionize Tea Processing: Introducing the DQM-150 Continuous Matcha Ball Mill

2026-06-04 09:20:55

Discover the DQM-150 Continuous Tea Ball Mill. Achieve up to 2500 mesh superfine tea powder with non-stop operation, water-cooling technology, and a 15-30kg/h output.

Powers the Future of Tea Production at the 8th China International Tea Expo

Powers the Future of Tea Production at the 8th China International Tea Expo

2026-05-26 16:54:41

Tea processing equipment, tea processing machinery, automated tea machinery, China International Tea Expo, tea roasting machine, tea factory automation, Hangzhou tea expo 2026.

Comparison of Different Grinding Balls for Matcha Ball Mill: Material, Performance and Selection Guide

Comparison of Different Grinding Balls for Matcha Ball Mill: Material, Performance and Selection Guide

2026-05-24 10:41:45

Matcha quality depends heavily on ultrafine grinding technology. Grinding balls are the core medium of matcha ball mills, directly affecting powder fineness, color, taste and food safety. This article compares four mainstream grinding media including zirconia beads, alumina ceramic balls, stainless steel balls and polyurethane balls, analyzes their differences in grinding efficiency, wear resistance, impurity pollution and applicable scenarios, providing professional selection suggestions for high-quality matcha production.

Matcha Grinder Guide: How to Choose the Best Mill for Premium Matcha Quality

Matcha Grinder Guide: How to Choose the Best Mill for Premium Matcha Quality

2026-05-24 10:39:52

Wondering how matcha grinding methods affect flavor, color, and nutrition? Learn the science of matcha milling and discover top-tier options: matcha ball mill, black gold stone mill, and bluestone stone mill for home and commercial use.

Contact us

Quanzhou Deli Agroforestrial Machinery Co., Ltd.
If you want know more about our products, please send email to us : info@delijx.com. You also can send message to our WeChat or WhatsApp : 0086-17750811550

Q: What is pile-fermentation?

Why need pile-fermentation? Pile-fermentation is the most important process in the production of Pu'er tea ripe tea and black tea, it is a key step in forming the unique taste of black tea.

Through the moist heat effect of pile-fermentation, it promotes the conversion of the contained substances, reduces the bitterness, makes the taste mellow, eliminates the odor, develops a special aroma, destroys the chlorophyll, and changes the leaf color to dark yellowish brown, which produces the unique aroma of black tea. (Similar to musty, but a fragrance).

Because of the special nature of the pile-fermentation, long time and high temperature, and the large number of batches processed, pile-fermentation trough are usually used. If the family produces in small batches, use clean containers. In addition, the tea used in pile-fermentation must be green tea, otherwise it will not succeed.


 

The processing of pile-fermentation: The dried green tea is evenly sprayed with water mist to increase the water content of the tea to 30%. Then pile up the tea leaves and cover them with a clean cotton cloth to keep them warm and allow the tea leaves to ferment naturally.

The fermentation temperature should be maintained between 40-60°C. The fermentation time is about 35 days, and it is flipped every 10 days. A total of about 3-4 flips are required.

When in the pile-fermentation, insert a thermometer into the pile of tea to observe the temperature change of the tea leaves. If the temperature exceeds 60°C, the tea leaves need to be spread out immediately to cool the tea leaves. If the temperature is lower than 40 degrees, it means that the water is insufficient, and you should spread out it immediately and add water to raise the temperature of the tea pile.

After 30-40 days of pile-fermenting, the color of the tea leaves becomes dark brown, with a special scent (mouldy fragrance). The flavor of the tea soup is strong and mellow, and the fermenting can be completed and dried.