How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds via pressure. This type of brewing creates a stronger beverage than drip coffee. The machines require 9 bars of pressure to extract flavor from the grounds. Espresso machines are available in three https://www-coffeee-uk17012.uzblog.net/this-is-the-good-and-bad-about-coffee-machines-espresso-43936729