Hand vs. Machine Harvesting with Viognier (2015)

Machine and hand-harvested Viognier were compared for chemical and sensory differences. The machine-harvested wine had higher pH, higher volatile acidity, and lower titratable acidity.  There was a significant sensory difference between wines, with most people preferring the machine-harvested wine.  This may have been due to some oxidation that the hand-harvested wine experienced.

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