How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds via pressure. This type of brewing makes a stronger beverage than drip coffee. These machines need 9 bars of pressure to extract flavor from the grounds. There are three main kinds of https://coffeee-uk26882.wizzardsblog.com/29778650/a-the-complete-guide-to-coffee-machines-espresso-from-start-to-finish