How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds via pressure. This type of brewing results in a stronger beverage than drip coffee. These machines require 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines are available https://coffeee81591.nizarblog.com/29934234/one-espresso-machine-success-story-you-ll-never-believe