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 into a portafilter to extract an espresso that is concentrated. Many models allow you to control important espresso variables like temperature and https://www-coffeee-uk97900.blogthisbiz.com/36032333/it-s-the-evolution-of-best-home-espresso-machine