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 sucked tightly inside a portafilter. This creates an intense espresso. Many models let you manage key espresso variables like temperature and pressure. https://coffeee38508.onesmablog.com/why-we-love-best-home-espresso-machine-and-you-should-too-70185049