How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds with pressure. This type of brewing results in more strength than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. Espresso machines are available in https://coffeeeuk73400.topbloghub.com/36054773/7-tips-to-make-the-most-of-your-coffee-machines-espresso