The method of grading Brazilian coffee beans according to the rate of cockroaches is “deduction method”. According to the number of cowpeas in each 300g main bean, the grades are No.2 to No.8, and the deduction points are below 4. Can be classified as No.2. A kidney bean can not be called No.1, of course, but this situation is small, can not maintain a certain supply, so Brazil will set No. 2 as the highest level, not No .1
The method of dividing the mesh size by the size of the coffee beans is to screen the sieves based on 1/64 inch, and the mesh size is usually 14-20. In addition, the size corresponding to the mesh number is the short side of the coffee bean, that is, the "width". The largest mesh of coffee beans in Brazil is 19 mesh, but the output is not much, so the highest grade is 17/18 mesh. The coffee beans we usually buy are mostly 15 or 16 mesh. Everyone is welcome to pay attention to the coffee front.