How Does Machine Espresso Work? Machine espresso uses precision pressure and mind-blowing filter technology to make the coffee we love. What exactly is it that makes it work? Espresso is produced by pushing hot water under pressure through finely-ground coffee. The process is similar to that of making drip coffee. https://coffeee09972.yomoblog.com/36056478/a-handbook-for-espresso-coffee-machine-from-beginning-to-end