How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing produces a stronger drink than drip coffee. The machines require 9 bars of pressure to extract flavor from the grounds. There are three main types of https://coffeeeuk90014.qowap.com/89315493/be-on-the-lookout-for-how-espresso-machine-is-taking-over-and-what-we-can-do-about-it