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 packed tightly into a portafilter. This creates a concentrated espresso. Many models let you manage key espresso variables like temperature and pressure. https://coffeeeuk53749.dm-blog.com/29912145/11-faux-pas-that-are-actually-okay-to-make-with-your-best-home-espresso-machine