Coffee and Espresso Machines Espresso machines use pressure to force water through finely ground and tamped coffee beans. They make a rich, tasty 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://coffeee-uk88247.ambien-blog.com/36016034/a-the-most-common-espresso-machine-debate-could-be-as-black-and-white-as-you-might-think