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 in a portafilter. This produces a concentrated espresso. Many models let you regulate important espresso variables like temperature and pressurization. https://www-coffeee-uk98701.idblogz.com/30337497/why-you-should-focus-on-making-improvements-best-home-espresso-machine