How to Choose a Coffee Machine For Pods The pod machines read the barcode at the top of the pod (which is actually an un-sealed disc of pre-dosed ground coffee compressed between two layers of filter paper). Simply insert it and press the button. Inject an espresso pod, and this https://www-coffeee-uk52992.ssnblog.com/27925251/pods-coffee-machine-11-thing-you-re-forgetting-to-do