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 into the portafilter to create a concentrated cup of espresso. Many models allow you to control key espresso factors such as temperature https://wwwcoffeeeuk89380.thechapblog.com/29284053/watch-out-how-best-home-espresso-machine-is-taking-over-and-what-to-do-about-it