How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds using pressure. This type of brewing makes more flavor than drip coffee. These machines require nine bar of pressure to extract the flavor from the ground. There are three main kinds of https://coffeee21852.goabroadblog.com/29230801/what-is-coffee-machines-espresso-how-to-utilize-it