Apply 5 Whys to move from a wine quality symptom to a process-level countermeasure.
A barrel lot's volatile acidity rose after a holiday weekend. Two barrels had low free SO2 and had not been topped on the Friday list. 5 Whys works when each answer is evidence-based and leads toward a process condition that can be changed. The common trap is stopping at a person-level cause such as the cellar hand forgot. That may describe the last touch, not the system that made forgetting likely. Why 1 Why did VA rise? The barrels had excess oxygen exposure and low protection over the weekend. Start with the quality mechanism, not the person. Why 2 Why…
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