Buying an Espresso Coffee Machine Espresso machines heat water to near-boiling and then force it through tightly-packed ground coffee in portafilter baskets under high pressure. They can also be used to make milk-based drinks. The majority of espresso makers have adjustable settings for the size of the drink and strengths. https://coffeeeuk95326.suomiblog.com/15-things-you-re-not-sure-of-about-coffee-espresso-machine-45510523