What is the primary benefit of calibrating grinders on a schedule?

• A. Longer machine life
• B. Silence
• C. Faster grinding
• D. Consistency of dose and flavor

Answer: (D)

Regular grinder calibration keeps the grind size and the amount of coffee ground in a predictable range. Burrs wear and drift, alignment can shift, and even small buildup or temperature changes can alter how much coffee a given setting delivers and how fine the grind is. When these variables drift, the dose and the grind uniformity change from shot to shot, which means extraction and flavor swing unpredictably. Calibrating on a schedule resets the grinder so that each dose lands in the intended range and the grind size matches the target, yielding consistent extraction and a stable flavor profile. While other effects like quieter operation or faster grinding might happen in some cases, the primary benefit lies in repeatable dose and flavor.