Coffee and Espresso Machines Espresso machines make use of pressure to push water through finely ground and tamped coffee beans. They produce a rich and tasty brew. Good Housekeeping Institute experts recommend models that use a minimum of 9 bars for a perfect extraction. Beware of companies that claim to https://www.coffeee.uk/products/smeg-ecf01whuk-espresso-coffee-machine-retro-style-white