What to Look For in a Professional Espresso Machine You'll want a machine that can control pre-infusion, which is important for establishing aroma and flavor. PID temperature control is an option that many coffee experts search for in an espresso machine that is professional. If you are planning to hire https://www-coffeee-uk62261.howeweb.com/30394660/20-resources-to-make-you-better-at-buy-espresso-machine