Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to close to boiling, then force it through tightly packed, finely ground coffee in an espresso portafilter, resulting in an espresso that is concentrated. Many models let you manage key espresso variables, such as https://coffeee58635.blogdigy.com/10-things-everybody-has-to-say-about-bean-to-cup-espresso-machine-44519602