Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling, and then force it through tightly packed ground coffee in portafilter baskets under pressure. They can also be used to make milk-based drinks. Most espresso makers include adjustable settings for the size of the drink and strengths. https://coffeee-uk57600.dbblog.net/3101809/how-to-make-a-profitable-coffee-espresso-machine-if-you-re-not-business-savvy