How to distinguish the defective beans in coffee beans

Caused by poor dryness or abnormal hybridization; the bean breaks from the central line and the inside is turned out like a shell. Shell beans can cause uneven baking and are easy to catch fire during deep baking.

Moth-eaten bean

Bean borer

Moths invade and lay eggs when the coffee fruit ripens and turns red, and the larvae eat the coffee fruit and grow, leaving traces of moth on the surface of the beans. Moth-eaten beans can cause cloudy coffee juice and sometimes produce a strange smell.

Black bean

Black bean

Beans that ripen and fall off early and ferment and blacken due to long-term contact with the ground. It can be easily selected by hand. Coffee mixed with black beans will smell rotten and turbid.

Cocoa

Cocoa

The reason for its formation is that the pulp remains and the pulp is not fully shelled by natural drying. With iodine, soil and other flavor, there will be a stink similar to ammonia. "Coco" means "dung" in Portuguese.