Which component grinds the beans inside the grinder?

Which component grinds the beans inside the grinder?

• A. Grinding burrs
• B. Hopper
• C. Dosing chamber
• D. Portafilter

Answer: (A)

Grinding happens by the grinding burrs—the two interlocking wheels (or cones) that shear the beans into smaller pieces. The gap between them is adjusted to set how fine or coarse the grind will be. The hopper simply holds the whole beans and feeds them toward the burrs, the dosing chamber stores a measured amount of ground coffee after grinding, and the portafilter is the vessel that collects the ground coffee for brewing. So the burrs are the actual grinding mechanism that creates the coffee particles.

Grinding happens by the grinding burrs—the two interlocking wheels (or cones) that shear the beans into smaller pieces. The gap between them is adjusted to set how fine or coarse the grind will be. The hopper simply holds the whole beans and feeds them toward the burrs, the dosing chamber stores a measured amount of ground coffee after grinding, and the portafilter is the vessel that collects the ground coffee for brewing. So the burrs are the actual grinding mechanism that creates the coffee particles.