How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines make use of pressure to force water through coffee grounds. This type of brewing results in a stronger drink than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. There are https://wwwcoffeeeuk94018.designi1.com/51653784/the-history-of-coffee-machines-espresso-in-10-milestones