How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds with pressure. This method of brewing produces a stronger beverage than drip coffee. The machines require 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines are available in https://www-coffeee-uk48660.answerblogs.com/29961452/how-to-explain-espresso-machine-to-your-mom