These coffee beans are bad varieties. Do not choose them.

Fermented bean

Coffee beans that fall into the soil and ferment before harvest. The moldy smell will have a great impact on the taste of coffee.

Dead bean

Also known as unripe beans, or affected by the climate due to red, the development is not perfect. Fried spots will be produced after baking, making the coffee have a green and astringent taste.

Black bean

Fermented beans, coffee beans that have rotted and blackened. Because it is black, it can be distinguished from normal coffee beans at a glance.

Borer bean

Insect-infested coffee beans.

Mutilated bean

It may be stuck during work, or carelessly handled during handling, resulting in incomplete coffee beans. Will cause fried spots when baking, and will produce bitter and astringent taste.

Other

Remaining thin-skinned beans, stunted beans, dried beans that do not completely produce moldy flavor, and only shell beans (shell beans).