I believe the raised-bed drying tables of Africa are the most effective of all the drying methods I have seen. Plenty of sunshine and air flow, and at a height that makes it easier for the quality control workers to sift through the coffee. Mostly local women are hired to turn the coffee. They thoughtfully and meticulously pull any defects out of the bean harvest, such as rocks and twigs. Their careful hands help ensure the coffee is clean and dry for proper roasting. Watching them at work is a practice in mindfulness!
Rwanda Kinunu