How to Choose a Coffee Machine For Pods The pod machines read the barcode that is on the top of the pod (which is actually a sealed disc pre-dosed ground coffee that is pressed between two layers of filter paper). You just insert it and press a button. This machine https://coffeee93315.blogpixi.com/28576666/10-tell-tale-warning-signs-you-should-know-to-get-a-new-best-pod-coffee-machine