Coffee and Espresso Machines Espresso machines make use of pressure to make water into finely ground and tamped beans. They make a rich, tasty brew. Experts at the Good Housekeeping Institute recommend models that brew at the minimum pressure of 9 bars in order to get the most efficient extraction. https://www.coffeee.uk/products/de-longhi-specialista-prestigio-espresso-cappuccino-machine-black-ec9355-bm