This video shows the process of roasting green coffee beans in the Behmor 1600 cofee roaster (drum style). this video shows the process including the cooling stage. The video is narrated and explains the stages the beans are at as they roast. I’ve roasted quite a few times with a RK drum roaster setup. I’ve also done many batches with the IRoast, which is now a bit defunct and parts are not longer available for the IRoast.