What to Look For in a Professional Espresso Machine You'll require a machine that has the ability to control the pre-infusion. This is essential to develop flavor. Many coffee experts look for PID temperature control in a professional machine. If you're planning to hire baristas who have no experience, you'll https://coffeee89287.blogdal.com/30225442/an-easy-to-follow-guide-to-buy-espresso-machine