How to Choose a Coffee Machine For Pods Pod machines work by reading the barcode at the top of the pod (which is actually a disc of sealed, pre-dosed ground coffee that is pressed between two layers of filter paper). Simply insert it into the machine and press a button. https://coffeee-uk22618.acidblog.net/59489340/best-pod-coffee-machine-the-ugly-truth-about-best-pod-coffee-machine