Coffee and Espresso Machines Espresso machines use pressure to push water through finely ground and tamped coffee beans. They make a rich, tasty brew. Experts from the Good Housekeeping Institute recommend models that brew at a minimum pressure of 9 bars in order to get the most efficient extraction. Beware https://coffeee36551.jiliblog.com/87080897/why-no-one-cares-about-espresso-machine