Coffee and Espresso Machines Espresso machines use pressure to push water through finely ground and tamped coffee beans. They create a rich, tasty brew. Good Housekeeping Institute experts recommend models that brew at a minimum of 9 bars to ensure the best extraction. Beware of manufacturers that claim to use https://www-coffeee-uk49991.worldblogged.com/35655028/ten-things-your-competitors-teach-you-about-espresso-machine