How to Choose a Coffee Machine For Pods The pod machines read 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 push the button. Inject an espresso pod, and this machine https://www-coffeee-uk74671.myparisblog.com/28808501/11-ways-to-completely-revamp-your-best-pod-coffee-machine