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My first experience of buying raw beans! A few details to pay attention to when buying coffee beans

Published: 2026-04-09 Author: World Gafei

Last Updated: 2026/04/09, Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) to buy coffee beans need to pay attention to the defect rate! Defect rate! Defect rate! 1 Mantenin G1500G raw beans, 140 defective beans, with a defect rate of 29%. This bean with high defect rate looks good. Under fine picking, there are so many defective beans, more and more, no.

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)

When buying coffee beans, you need to pay attention to the defect rate! Defect rate! Defect rate!

1 Mantenin G1500G raw beans, 140 defective beans, defect rate 29%, this high defect rate beans, the appearance looks good, carefully picked under

Unexpectedly, there are so many defective beans, more and more, the defective beans that do not affect health have not been picked out; the size of the beans is also much different, there are flat beans and round beans, it is difficult to pick.

It's terrible to pick a belly full of fire. Is it the problem of the raw bean merchant? Or is the Manning G1 such a high defect rate?

2 Guatemala Vivette Nanguo, 500GGraI 48G defective beans, the defect rate is 9.44%. The defect rate is good, but the color of beans is the yellowest of the four.

It's not buying sun beans, it looks like seasonal beans, but fortunately it doesn't taste moldy yet.

3 Kenya AA,500G,40G defective beans, 8% defect rate. The bean is easy to pick out the defect rate is low, push.

4 Sidamo, Ethiopia, 500g 15G defective beans, 3% defect rate, small beans but low defect rate, push.

Buying beans on the Internet is risky, please refer to it.

The picture above shows defective beans. Black beans, moth-eaten beans and moldy beans must be picked out. Drinking them will affect your health.

Qianjie coffee: Guangzhou bakery, the store is small but a variety of beans, you can find a variety of unknown beans, but also provide online store services. Https://shop104210103.taobao.com

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。