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). You just insert it and press a button. Inject an espresso pod, and this machine https://www.34630194.xyz/68xxdk-k3y01j-vm1d6i1-tuur82l-42z-4174/