Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to near boiling before forcing it through tightly packed, finely ground coffee in the portafilter to create a concentrated cup of espresso. Many models let you control key espresso factors like temperature and pressure. https://www-coffeee-uk15317.anchor-blog.com/10111561/ten-pinterest-accounts-to-follow-best-home-espresso-machine