How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This method of brewing creates a stronger drink than drip coffee. These machines need 9 bars of pressure to extract flavor from the grounds. Espresso machines are available in three https://www-coffeee-uk98019.thezenweb.com/espresso-machine-explained-in-fewer-than-140-characters-67589658