Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines make the water hot to close to boiling point before forcing it through finely ground coffee packed tightly into a portafilter. This creates a concentrated espresso. Many models let you control the most important espresso elements https://coffeeeuk39639.thenerdsblog.com/35412896/17-signs-to-know-if-you-work-with-bean-to-cup-espresso-machine