Coffee Powder Processing
The cherries are dried and husked using the wet method. The beans are then
placed on a conveyor belt that carries them past workers who remove sticks and other debris.
Next, they are graded according to size, the location and altitude of the plantation where
they were grown. Once these processes are completed, workers select and pack particular
types and grades of beans.
When the coffee beans arrive at a roasting plant, they are again cleaned and sorted. The beans are roasted in huge commercial roasters. After leaving the roaster, the beans are placed in a cooling vat, wherein they are stirred while cold air is blown over them. After grinding, coffee is brewed with water in huge percolators after the grinding stage. An extract is clarified from the brewed coffee and sprayed into a large cylinder. As it falls downward through this cylinder, it enters a warm air stream that converts it into a dry powder.