How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines make use of pressure to push water through coffee grounds. This method of brewing creates more strength than drip coffee. These machines require 9 bar of pressure to extract flavor from the coffee grounds. There are three primary https://www-coffeee-uk55924.therainblog.com/29073336/5-coffee-machines-espresso-lessons-from-the-professionals