Coffee and Espresso Machines Espresso machines make use of pressure to push water through finely ground and tamped coffee beans. They produce a rich, delicious cup. Experts from the Good Housekeeping Institute recommend models that brew with the minimum pressure of 9 bars to ensure the highest extraction. Beware of https://coffeee-uk72401.webbuzzfeed.com/30301722/coffee-machines-espresso-tips-that-will-change-your-life