What to Look For in a Professional Espresso Machine You'll need a machine that has the capability to control the pre-infusion. This is important for developing flavor. Many coffee experts also look for PID temperature control in a professional machine. If you're planning to hire baristas who have no experience, https://wwwcoffeeeuk95371.humor-blog.com/29141834/15-bizarre-hobbies-that-ll-make-you-better-at-buy-espresso-machine