The quality of an espresso shot is determined by myriad factors. Most people focus on the espresso machine and/or the quality of the coffee being used —both important, of course. However, the quality of the espresso grinder used in preparing a perfect shot of espresso is equally important.
Espresso requires a very fine, consistent coffee grind in order to brew correctly, and thus a specifically designed and engineered professional grinder. Other factors: choosing the correct size and model for speed, efficiency and consistent quality to keep up with your espresso machine during busy hours at your coffee shop or restaurant.