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-uk73270.blog-mall.com/30329049/the-3-greatest-moments-in-espresso-machine-history