https://click4r.com/posts/g/19....081429/how-do-i-expl
https://karstensen-gold.federa....tedjournals.com/a-pr
What to Look For in a Professional Espresso Machine You'll want a machine that can be controlled the pre-infusion, which is essential to develop flavor and aroma. PID temperature control is also an attribute that many coffee experts search for in a professional espresso machine. If you're planning to hire baristas who have no experience, you'll require a machine that's easy to operat