Espresso Machines - How to Choose the Right Espresso Machine for You Espresso machines heat the water to near boiling point before forcing it through finely ground coffee packed tightly inside the portafilter. This produces a concentrated espresso. Many models let you regulate key espresso factors such as temperature and https://www-coffeee-uk00081.techionblog.com/29871967/10-misconceptions-your-boss-holds-about-bean-to-cup-espresso-machine