Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point, then force it through finely ground coffee sucked tightly into a portafilter. This results in a concentrated espresso. Many models let you regulate the most important espresso elements like https://www-coffeee-uk87505.activablog.com/29336836/a-proactive-rant-about-bean-to-cup-espresso-machine