What to Look For in a Professional Espresso Machine You'll need a machine that can control pre-infusion, which is important for establishing aroma and flavor. Many coffee experts also look for PID temperature control in a professional machine. If you're planning on hiring baristas without much experience, you'll require an https://coffeee-uk72401.webbuzzfeed.com/30365751/15-weird-hobbies-that-will-make-you-better-at-buy-espresso-machine