How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds by using pressure. 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 available https://www-coffeee-uk81692.blog2news.com/30344219/how-to-choose-the-right-coffee-machines-espresso-on-the-internet