How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing results in a stronger drink than drip coffee. These machines require nine bars of pressure in order to extract the flavor from the ground. Espresso machines https://coffeee57011.blogripley.com/30370182/the-step-by-step-guide-to-choosing-the-right-coffee-machines-espresso