Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to near boiling before forcing it through a tightly packed, finely ground coffee in a portafilter to extract a concentrated cup of espresso. Many models let you regulate key espresso elements, such as temperature https://www-coffeee-uk02119.pointblog.net/don-t-make-this-mistake-when-it-comes-to-your-best-home-espresso-machine-71508230