How to Choose a Coffee Machine For Pods Pod machines scan the barcode 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 and press a button. Inject an espresso pod, and the machine goes https://coffeee-uk20974.blog5star.com/28709381/a-brief-history-of-pods-coffee-machine-history-of-pods-coffee-machine