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 into the portafilter to create an espresso that is concentrated. Many models allow you to control important espresso variables like temperature https://coffeee15094.blogrelation.com/35879196/10-pinterest-accounts-you-should-follow-about-best-home-espresso-machine