How to classify coffee beans A brief introduction to the classification standard of Ethiopian defective beans

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Introduction of Qianjie-defective bean grading system

This is the earliest classification method. At present, the main representative countries that use defective bean proportion method are Ethiopia, Indonesia and so on. Indonesian beans are mainly divided into six grades, namely G1~G6. Ethiopian coffee bean classification takes 300g coffee beans as samples to select the number of defective beans.

Quality and grading of Ethiopian coffee beans

Grade, number of defective beans

G10-3

G24-12

G3 13-25

G4 26-45

G546-100

Classification according to the proportion of defective beans

This grading method deducts points according to defective beans, and then carries out a taste test. Defective beans are an important factor that destroys the flavor of coffee, so defective beans should be removed in the last step of raw bean treatment. This method is widely used in Brazil, we often see "Brazil Santos NO.2" when buying coffee beans, NO.2 is the highest grade of Brazilian coffee beans, because there are very few defective beans, and can not maintain a certain supply, so Brazil sets NO.2 as the highest level, not NO.1.

Due to the rise of boutique coffee, coffee producing countries pay more and more attention to the quality of coffee beans, and the control of defective beans is the most important way, so it is more and more common to classify according to the proportion of defective beans.

Knowledge: the coffee grading of most coffee-producing countries is not carried out according to one standard, but not only to examine the defect rate, but also to ensure the size of beans, but also to measure the grade of beans by multiple standards such as a certain altitude.

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