How to Choose a Coffee Machine For Pods Pod machines operate by reading the barcode at the top of the pod (which is actually a disc of sealed, pre-dosed ground coffee compressed between two layers of filter paper). You just insert it and push the button. Put in an espresso https://coffeee83644.dailyhitblog.com/33735948/wisdom-on-best-pod-coffee-machine-from-the-age-of-five