How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing produces a stronger drink than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. Espresso machines are available in https://coffeeeuk05348.csublogs.com/36102073/it-s-the-complete-guide-to-coffee-machines-espresso