How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing produces a stronger drink than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. There are three main kinds https://wwwcoffeeeuk03517.laowaiblog.com/29116927/the-most-effective-coffee-machines-espresso-tricks-to-transform-your-life