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 into the portafilter to create an espresso cup that is concentrated. Many models let you regulate important espresso variables like temperature https://coffeee-uk62642.ourcodeblog.com/29944279/the-intermediate-guide-on-best-home-espresso-machine