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 packed tightly in the portafilter. This produces an intense espresso. Many models let you regulate key espresso elements like temperature and pressure. https://coffeeeuk96832.blogspothub.com/29298917/bean-to-cup-espresso-machine-it-s-not-as-difficult-as-you-think