Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point before forcing it through finely ground coffee sucked tightly into the portafilter. This results in an intense espresso. Many models allow you to manage key espresso variables, such as https://www-coffeee-uk48660.answerblogs.com/29985987/the-10-scariest-things-about-bean-to-cup-espresso-machine