How to Keep Your Espresso Maker Clean A high-quality espresso machine will allow you to make drinks of cafe quality at home. It's a complicated, precise instrument that can be difficult to master. Espresso machines function by pushing hot water under pressure through a tightly packed portafilter of finely-ground coffee. https://coffeeeuk01982.bloguetechno.com/20-myths-about-best-coffee-espresso-machine-busted-65150149