Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water to close to boiling, then force it through a tightly packed, finely ground coffee in a portafilter to extract an espresso cup that is concentrated. Many models let you control important espresso variables like https://coffeee45708.jaiblogs.com/56802643/10-fundamentals-on-best-home-espresso-machine-you-didn-t-learn-in-school