Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines bring the water up to a boiling point, then force it through finely ground coffee that is packed tightly into a portafilter. This produces a concentrated espresso. Many models allow you to control important espresso variables https://coffeeeuk05348.csublogs.com/36177817/17-signs-you-are-working-with-bean-to-cup-espresso-machine