How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines use pressure to push water through coffee grounds. This type of brewing results in a stronger beverage than drip coffee. These machines require nine bars of pressure to extract the flavor from the ground. Espresso machines are available https://www.coffeee.uk/products/beko-cep5152b-espresso-machine-15-bar-1200-ml-black