Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling, and then force it under high pressure through tightly packed ground coffee in portafilters. They can also be used to create milk-based drinks. Most espresso makers include adjustable settings for the size of the drink and strengths. https://coffeee24351.blogchaat.com/29864330/the-people-nearest-to-coffee-espresso-machine-tell-you-some-big-secrets