How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing makes a stronger drink than drip coffee. The machines require nine bars of pressure in order to extract the flavor from the ground. There are three https://www-coffeee-uk10221.bloggerswise.com/36475224/how-to-design-and-create-successful-coffee-machines-espresso-instructions-for-homeschoolers-from-home