Keurig is a pod-based coffee maker with an automatic brewing system, heating chamber, and additional features. Keurig machines operate like drip coffee makers but with pressurized water through pre-measured capsules called K-Cups. If you're unfamiliar with how Keurig machines work, the brewing instructions are easy to follow. You fill the water tank, insert a K-Cup, press the button, and wait for delicious coffee in less than a minute!