To grind those beans, coffee mills use either burrs –â ¯abrasive surfaces that rotate and grind the beans between them –â ¯or regular blades, not unlike those that you’d find on a hand blender or food ...
If you brew espresso at home and your machine doesn't have a built-in grinder, an espresso grinder ... and one that you're able to adjust in small increments to perfection," says professional ...