Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point, then force it through finely ground coffee sucked tightly in a portafilter. This results in an intense espresso. Many models allow you to control key espresso factors like temperature https://wwwcoffeeeuk66350.liberty-blog.com/29929604/bean-to-cup-espresso-machine-it-s-not-as-difficult-as-you-think