Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point, then force it through finely ground coffee sucked tightly in a portafilter. This creates a concentrated espresso. Many models let you regulate important espresso variables like temperature and pressurization. https://coffeee-uk94017.mybjjblog.com/the-best-home-espresso-machine-awards-the-most-worst-and-most-bizarre-things-we-ve-seen-43194776