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 manage key espresso variables like temperature and pressure. https://coffeee38978.blogsidea.com/36042640/why-nobody-cares-about-best-home-espresso-machine