Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines bring the water up to a boiling point before forcing it through finely ground coffee that is packed tightly into the portafilter. This creates a concentrated espresso. Many models allow you to manage key espresso variables, https://coffeee-uk05230.wssblogs.com/29846123/a-brief-history-of-the-evolution-of-best-home-espresso-machine