How to Choose a Coffee Machine For Pods Pod machines scan the barcode on the top of each pod (which is a disc of pre-dosed, sealed ground coffee that is pressed between layers of filter paper). It is easy to insert it and press the button. Inject an espresso pod, https://www-coffeee-uk97900.blogthisbiz.com/34339995/nine-things-that-your-parent-teach-you-about-best-pod-coffee-machine