How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds using pressure. This type of brewing creates a stronger beverage than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. There are three major types https://wwwcoffeeeuk37518.activoblog.com/30488879/how-to-get-more-value-with-your-espresso-machine