What to Look For in a Professional Espresso Machine You'll want a machine which can be controlled the pre-infusion process, which is crucial to develop aroma and flavor. PID temperature control is a feature that coffee experts are looking for in a professional espresso machine. If you plan on hiring https://www-coffeee-uk47875.theblogfairy.com/29327948/10-things-everybody-hates-about-buy-espresso-machine