Coffee and Espresso Machines Espresso machines utilize pressure in order to press water into finely crushed and tamped beans. They create a rich, delicious brew. Experts from the Good Housekeeping Institute recommend models that brew with a minimum pressure of 9 bars to get the most efficient extraction. Beware of https://www.coffeee.uk/products/breville-one-touch-coffeehouse-espresso-latte-machine