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 an even stronger drink than drip coffee. The machines require 9 bars of pressure to extract flavor from the coffee grounds. Espresso machines https://www-coffeee-uk97900.blogthisbiz.com/35976887/12-companies-leading-the-way-in-espresso-machine