date:Jul 25, 2018
any remaining silver skin from the beans following hulling. It is done to improve the appearance of the green beans. Care must be taken because the temperatures experienced by the beans during polishing may be detrimental to final coffee flavor.
Step 6: Cleaning, Sorting, and Grading
Fine coffee is sorted and cleaned through a multistep process. Air sorters, sieve shakers, and gravity separators are used to separate based on density and size. Color sorting is performed using machines or by han