What to Look For in a Professional Espresso Machine You'll need a machine that has the capability to regulate the pre-infusion. This is essential for the development of flavor. Many coffee experts look for PID temperature control in an industrial machine. If you're planning to hire baristas without much experience, https://coffeeeuk22578.blogdosaga.com/29721644/a-step-by-step-guide-to-buy-espresso-machine