Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling. They then push it under pressure to pass through tightly packed ground coffee in portafilters. They can also be used to make milk-based drinks. The majority of espresso makers have customizable settings for different sizes of drinks https://coffeee14613.iyublog.com/29322964/best-ground-coffee-for-espresso-machine-a-simple-definition