Coffee and Espresso Machines Espresso machines make use of pressure to push water through finely ground and tamped coffee beans. They make a rich and delicious cup of coffee. Good Housekeeping Institute experts recommend models that brew at a minimum of 9 bars to ensure the best extraction. Beware of https://coffeee35685.ampedpages.com/this-is-the-complete-guide-to-coffee-machines-espresso-57069154