Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water until close to boiling, then force it through tightly packed finely ground coffee in the portafilter to create a concentrated cup of espresso. Many models let you control important espresso variables like temperature and https://coffeee-uk62642.ourcodeblog.com/29966524/best-home-espresso-machine-explained-in-fewer-than-140-characters