Coffee and Espresso Machines Espresso machines make use of pressure to force water through finely ground and tamped coffee beans. They make a rich, delicious brew. Good Housekeeping Institute experts recommend models that are brewed at a minimum of 9 bars for a perfect extraction. Beware of manufacturers who claim https://coffeeeuk39639.thenerdsblog.com/35387044/a-guide-to-coffee-machines-espresso-from-start-to-finish