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 the most important espresso elements like temperature https://wwwcoffeeeuk03517.laowaiblog.com/29178138/10-misconceptions-your-boss-shares-concerning-bean-to-cup-espresso-machine