Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling, and then force it through tightly-packed ground coffee in portafilter baskets under high pressure. They can also be used to make milk-based drinks. Most espresso makers come with customizable settings for different sizes of drinks and strengths. https://coffeeeuk16314.isblog.net/15-up-and-coming-best-ground-coffee-for-espresso-machine-bloggers-you-need-to-check-out-47075413