How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines make use of pressure to push water through coffee grounds. This type of brewing makes more flavor than drip coffee. These machines need 9 bars of pressure to extract flavor from the grounds. There are three types of https://www-coffeee-uk14405.bloggin-ads.com/53184297/it-s-the-complete-guide-to-coffee-machines-espresso