Coffee and Espresso Machines Espresso machines use pressure to force water into finely ground and tamped beans. They produce a rich and delicious cup of coffee. Experts from the Good Housekeeping Institute recommend models that brew with the minimum pressure of 9 bars to get the best extraction. Beware of https://www-coffeee-uk21787.blogminds.com/how-to-choose-the-right-coffee-machines-espresso-on-the-internet-27468929