How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines make use of pressure to push water through coffee grounds. This method of brewing creates more strength than drip coffee. These machines require 9 bars of pressure to extract flavor from the grounds. There are three major kinds https://www-coffeee-uk99273.blogunteer.com/29130007/why-we-enjoy-espresso-machine-and-you-should-also