How to Choose a Coffee Machine For Pods The pod machines read the barcode at the top of the pod (which is actually a sealed disc pre-dosed ground beans that are encased between two layers of filter paper). You just insert it and press a button. Inject an espresso pod https://coffeee66811.ttblogs.com/7864370/20-up-andcomers-to-watch-the-pods-coffee-machine-industry