How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines make use of pressure to force water through coffee grounds. This type of brewing results in a stronger drink than drip coffee. The machines require 9 bars of pressure to extract flavor from the grounds. Espresso machines are https://coffeeeuk84010.blogoscience.com/35872249/coffee-machines-espresso-tips-from-the-best-in-the-industry