Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines make the water hot to close to boiling point before forcing it through finely ground coffee packed tightly into a portafilter. This results in a concentrated espresso. Many models allow you to control important espresso variables https://coffeee44494.frewwebs.com/30376091/how-to-get-more-results-out-of-your-best-home-espresso-machine