How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds with pressure. This type of brewing creates stronger beverages than drip coffee. These machines require 9 bars of pressure to extract flavor from the coffee grounds. There are three main kinds of https://wwwcoffeeeuk37791.blogproducer.com/36220124/from-the-web-the-20-most-amazing-infographics-about-espresso-machine