How Does Machine Espresso Work? Machine espresso makes use of precise pressure and mind-blowing filter technology to create the perfect cup of coffee. What exactly is it? Espresso is created by forcing hot water at high pressure through finely-ground coffee. The process is similar to that of making drip coffee. https://coffeeeuk95326.suomiblog.com/the-history-of-espresso-coffee-machine-in-10-milestones-45434247