Coffee and Espresso Machines Espresso machines use pressure to push water through finely ground and tamped coffee beans. They make a rich and tasty brew. Experts at the Good Housekeeping Institute recommend models that brew at a minimum pressure of 9 bars to get the most efficient extraction. Beware of https://coffeee-uk68030.blogmazing.com/29272859/11-faux-pas-that-are-actually-acceptable-to-make-with-your-espresso-machine