How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds via pressure. This type of brewing makes more strength than drip coffee. These machines require 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines are available in three https://www.coffeee.uk/products/de-longhi-barista-pump-espresso-machine-coffee-cappuccino-maker-black