How to Choose a Coffee Machine For Pods Pod machines read the barcode that is located on the top of each pod (which is a disc of pre-dosed, sealed ground coffee, pressed between layers of filter paper). Simply insert it into the machine and push the button. Inject an espresso https://www-coffeee-uk98019.thezenweb.com/11-strategies-to-refresh-your-best-pod-coffee-machine-66157222