Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water until near boiling and force it through a tightly packed finely ground coffee into a portafilter to extract an espresso cup that is concentrated. Many models allow you to control important espresso variables like https://coffeee38794.verybigblog.com/29400895/a-provocative-remark-about-bean-to-cup-espresso-machine