How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds by using pressure. This type of brewing results in more flavor than drip coffee. These machines require nine bar of pressure to extract the flavor from the ground. Espresso machines are available https://coffeeeuk05348.csublogs.com/36102073/it-s-the-complete-guide-to-coffee-machines-espresso