Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to close to boiling, then force it through tightly packed finely ground coffee into the portafilter to create an espresso that is concentrated. Many models let you control key espresso factors, such as temperature https://www-coffeee-uk17012.uzblog.net/a-intermediate-guide-the-steps-to-best-home-espresso-machine-43985684