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). You simply insert it and press the button. Pop in an espresso pod https://coffeee-uk39812.bloggerbags.com/33484939/10-facts-about-best-pod-coffee-machine-that-insists-on-putting-you-in-the-best-mood