Guatemalan Coffee Beans from Rio Azul Coffee Coffee Cooperative are drying on their patios until they reach a specific humidity target. The growers must carefully turn the beans so they dry in a uniform manner. The next stage is to mill the outer shell and sort the coffee for size and removing any defects. There are numerous forms to dry coffee but this is very common in this area. Also common are raised beds, where the coffee is off the ground allowing fro better air circulation.