How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to force water through coffee grounds. This type of brewing creates a stronger beverage than drip coffee. The machines require nine bars of pressure to extract the flavor from the ground. There are three kinds of https://coffeeeuk01982.bloguetechno.com/be-on-the-lookout-for-how-espresso-machine-is-taking-over-and-what-you-can-do-about-it-65122453