Coffee And Espresso Machines Espresso machines use pressure to push water through finely ground and tamped coffee beans. They produce a rich and tasty brew. Experts at the Good Housekeeping Institute recommend models that brew at the minimum pressure of 9 bars in order to achieve optimal extraction. Beware of https://www.coffeee.uk/products/de-longhi-vintage-icona-espresso-cappuccino-machine-cream-1-4l