How to Choose a Coffee Machine For Pods Pod machines read 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 a button. Pop in an espresso https://www-coffeee-uk02119.pointblog.net/7-simple-tricks-to-totally-intoxicating-your-pods-coffee-machine-69552219