How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This method of brewing produces a stronger beverage than drip coffee. These machines need 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines are available in https://coffeee83644.dailyhitblog.com/35209714/20-fun-informational-facts-about-espresso-machine