Coffee and Espresso Machines Espresso machines use pressure to force water into finely ground and tamped beans. They make a rich, delicious brew. Good Housekeeping Institute experts recommend models that are brewed at 9 bars minimum to ensure the best extraction. Beware of companies that claim to offer more pressure https://coffeee11375.kylieblog.com/30264518/why-people-are-talking-about-coffee-machines-espresso-right-now