How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds using pressure. This type of brewing produces more strength than drip coffee. These machines need 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines are available in three https://www-coffeee-uk98701.idblogz.com/30290387/a-brief-history-of-the-evolution-of-espresso-machine