Coffee and Espresso Machines Espresso machines make use of pressure to push water through finely ground and tamped coffee beans. They make a rich, tasty brew. Experts from the Good Housekeeping Institute recommend models that brew at a minimum pressure of 9 bars to ensure the highest extraction. Beware of https://www-coffeee-uk74868.blue-blogs.com/36466245/the-unknown-benefits-of-coffee-machines-espresso