Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point before forcing it through finely ground coffee sucked tightly inside a portafilter. This results in a concentrated espresso. Many models allow you to control key espresso factors such as https://www-coffeee-uk39389.life3dblog.com/29162653/the-3-greatest-moments-in-best-home-espresso-machine-history