Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat water until near boiling before forcing it through a tightly packed finely ground coffee in an espresso portafilter, resulting in a concentrated cup of espresso. Many models let you regulate key espresso elements, such as https://www-coffeee-uk55924.therainblog.com/29118375/the-most-effective-advice-you-ll-receive-about-bean-to-cup-espresso-machine