Buying an Espresso Coffee Machine Espresso machines heat water to near boiling and then force it through tightly packed ground coffee into portafilters under pressure. They also provide steam for drinks made from milk. The majority of espresso makers have adjustable settings for the size of the drink and strengths. https://www-coffeee-uk67327.blogunok.com/30044784/20-fun-facts-about-best-ground-coffee-for-espresso-machine