Coffee And Espresso Machines Espresso machines utilize pressure to push water into finely roasted and tamped beans. They create a rich and delicious cup of coffee. Experts at the Good Housekeeping Institute recommend models that brew at the minimum pressure of 9 bars to ensure the highest extraction. Beware of https://www.coffeee.uk/products/fimei-espresso-machine-with-milk-frother-20-bar