Buying an Espresso Coffee Machine Espresso machines heat water to near-boiling and then force it through tightly packed ground coffee in portafilter baskets under high pressure. They also supply steam for drinks made from milk. The majority of espresso makers have customizable settings for different sizes of drinks and strengths. https://www-coffeee-uk21787.blogminds.com/12-companies-leading-the-way-in-best-ground-coffee-for-espresso-machine-27518187