Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to near boiling and force it through a tightly packed finely ground coffee into a portafilter to extract a concentrated cup of espresso. Many models allow you to control key espresso factors such as https://coffeee14613.iyublog.com/29359051/5-laws-everyone-working-in-bean-to-cup-espresso-machine-should-know