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