What to Look For in a Professional Espresso Machine You'll need a machine that has the ability to control the pre-infusion. This is crucial for developing flavor. Many coffee experts look for PID temperature control in a professional machine. If you're planning on hiring baristas without much experience, you'll require https://coffeeeuk27628.ageeksblog.com/29127447/20-things-you-need-to-know-about-buy-espresso-machine