What to Look For in a Professional Espresso Machine You'll need a machine that can control pre-infusion, which is important for developing flavor and aroma. PID temperature control is also a feature that many coffee experts look for in an espresso machine that is professional. If you're planning on hiring https://www-coffeee-uk17009.blogofoto.com/61031855/does-technology-make-buy-espresso-machine-better-or-worse