What to Look For in a Professional Espresso Machine You'll need a machine that has the ability to control the pre-infusion process, which is crucial to develop flavor and aroma. Many coffee experts also look for PID temperature control in the best machines. If you're planning on hiring baristas without https://www-coffeee-uk13681.blognody.com/29821224/learn-to-communicate-buy-espresso-machine-to-your-boss