Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling and then force it under a high pressure through tightly packed ground coffee into portafilters. They can also be used to create milk-based drinks. The majority of espresso makers have programmable settings for drink sizes and strengths. https://coffeee-uk79188.estate-blog.com/29326269/who-is-coffee-espresso-machine-and-why-you-should-care