How Does Machine Espresso Work? Machine espresso uses precision pressure and amazing filter technology to make the coffee we love. What exactly is it that makes it work? Espresso is produced by pushing hot water at high pressure through finely ground coffee. The process is similar to making drip coffee. https://wwwcoffeeeuk37791.blogproducer.com/36218956/the-reasons-to-focus-on-improving-best-home-espresso-machine