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 in a portafilter. This results in a concentrated espresso. Many models let you control important espresso variables https://wwwcoffeeeuk31886.buyoutblog.com/29856415/one-of-the-biggest-mistakes-that-people-make-when-using-bean-to-cup-espresso-machine