Buying an Espresso Coffee Machine Espresso machines heat water to a temperature near boiling. They then push it under a high pressure through tightly packed ground coffee portafilters. They also supply steam for milk-based drinks. Most espresso machines have programmable settings to adjust the strength and size of the drink. https://wwwcoffeeeuk57769.blogzet.com/how-to-create-an-awesome-instagram-video-about-best-ground-coffee-for-espresso-machine-44614471