Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling, and then force it through tightly packed ground coffee into portafilter baskets under high pressure. They also supply steam for drinks made from milk. The majority of espresso makers have programmable settings for drink sizes and strengths. https://wwwcoffeeeuk47366.targetblogs.com/30343968/it-s-the-best-ground-coffee-for-espresso-machine-case-study-you-ll-never-forget