Buying an Espresso Coffee Machine Espresso machines heat water to a temperature near boiling. They then push it under pressure to pass through tightly packed ground coffee in portafilters. They also supply steam for milk-based drinks. The majority of espresso makers have adjustable settings for the size of the drink https://coffeee-uk76929.blogdon.net/check-out-how-best-ground-coffee-for-espresso-machine-is-taking-over-and-what-we-can-do-about-it-46015416