Coffee and Espresso Machines Espresso machines use pressure to force water into finely ground and tamped beans. They create a rich and delicious brew. Experts from the Good Housekeeping Institute recommend models that brew with the minimum pressure of 9 bars in order to achieve optimal extraction. Beware of brands https://www.coffeee.uk/products/de-longhi-stilosa-ec260-bk-traditional-pump-espresso-coffee-machine