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 the portafilter to create a concentrated cup of espresso. Many models let you control key espresso factors like temperature and pressure. https://wwwcoffeeeuk57769.blogzet.com/15-up-and-coming-best-home-espresso-machine-bloggers-you-need-to-follow-44660946