Buying an Espresso Coffee Machine Espresso machines heat the water to close to boiling and then force it under a high pressure through tightly packed ground coffee in portafilters. They also supply steam for milk-based drinks. Most espresso makers come with customizable settings for different sizes of drinks and strengths. https://www-coffeee-uk02441.elbloglibre.com/29788105/here-s-an-interesting-fact-regarding-coffee-espresso-machine