Coffee and Espresso Machines Espresso machines make use of pressure to push water through finely ground and tamped coffee beans. They create a rich, delicious brew. Experts from the Good Housekeeping Institute recommend models that brew with the minimum pressure of 9 bars to ensure the highest extraction. Beware of https://www.coffeee.uk/products/fohere-professional-compact-espresso-maker-with-milk-frother