What to Look For in a Professional Espresso Machine You'll want a machine that has the ability to control the pre-infusion process, which is crucial to develop aroma and flavor. PID temperature control is also a feature that coffee experts are looking for in a professional espresso machine. If you https://www-coffeee-uk03044.bloguerosa.com/29141862/14-questions-you-might-be-afraid-to-ask-about-buy-espresso-machine