A Keurig is a single-serve coffee maker that uses K-Cups, which are pre-filled with coffee grounds. To work a Keurig, you first need to fill the water reservoir with cold water. Then, insert a K-Cup into the machine and close the lid. Next, select the desired brew size and press the brew button. The Keurig will then heat the water and puncture the K-Cup, allowing the coffee to flow into your cup. Once the brewing process is complete, the Keurig will automatically eject the K-Cup into a waste receptacle.
Keurigs are popular because they are easy to use and produce a consistent cup of coffee. They are also relatively affordable and can be found in many homes and offices. Keurigs have also been shown to be more energy-efficient than traditional coffee makers.