Buying an Espresso Coffee Machine Espresso machines heat water until near boiling and then force it through tightly-packed ground coffee into portafilter baskets under high pressure. They can also be used to make milk-based drinks. The majority of espresso makers have customizable settings for different sizes of drinks and strengths. https://coffeee38978.blogsidea.com/36065921/15-things-you-re-not-sure-of-about-coffee-espresso-machine