What to Look For in a Professional Espresso Machine You'll want a machine which can control pre-infusion, which is important for developing flavor and aroma. PID temperature control is an attribute that many coffee experts look for in an espresso machine that is professional. If you plan to hire baristas https://coffeeeuk74204.blogdeazar.com/29953372/how-to-create-an-awesome-instagram-video-about-buy-espresso-machine