Nav: Home > Coffee Knowledge >

Tips for selecting defective beans in coffee

Published: 2026-04-06 Author: World Gafei

Last Updated: 2026/04/06, In the selection of defective beans, the most difficult to judge are fermented beans and unripe beans.

At first glance, some are slightly yellow, or only slightly different, which makes it difficult to judge whether they should be removed or not. However, as long as there is hesitation, it should be eliminated without thinking. In short, the most important thing is to use the most perfect hand selection to make delicious coffee.

At the end of the manual selection step, then make a final confirmation with your tongue. The order is experimental baking and cup testing. At the same time, baking and cup testing of the defective beans that have been picked out according to different categories is also a major focus. "as long as mixed with a fermented bean, will destroy 50 grams of coffee," this statement is true or false, can be judged by the taste.

Pick out defective beans quickly. It doesn't matter if you have a personal interest, but if you want to use it in a coffee shop, hand-selected assignments can be labor-consuming and time-consuming, so many stores will omit steps such as hand selection or cup testing. The approximate speed is 20 kilograms of coffee beans per hour.

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 。