Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water until near boiling and force it through tightly packed, finely ground coffee in a portafilter to extract a concentrated cup of espresso. Many models let you control important espresso variables like temperature and pressure. https://www-coffeee-uk39309.mpeblog.com/53533419/15-terms-that-everyone-is-in-the-best-home-espresso-machine-industry-should-know