Buying an Espresso Coffee Machine Espresso machines heat the water to near boiling. They then push it under pressure to pass through tightly packed ground coffee into portafilters. They also provide steam for milk-based drinks. Most espresso machines have programmable settings to adjust the strength and volume of the beverage. https://coffeee97292.snack-blog.com/29786914/10-facts-about-best-ground-coffee-for-espresso-machine-that-will-instantly-bring-you-to-a-happy-mood