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Wine ratings and commercial reality

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  • De Nicoló, Gianni

Abstract

Is the quality of a 91-point wine significantly different from that of an 89-point wine? Which wines are underpriced relative to their evaluation of quality? This paper addresses these questions by constructing a novel wine rating system based on scores assigned by a panel of wine experts to a set of wines. Wines are classified in ranked disjoint quality equivalence classes using measures of statistically significant and commercially relevant score differences. The rating system is applied to the “Judgment of Paris” wine competition, to data of Bordeaux en-primeur expert scores and prices, and to expert scores and price categories of a large database of Italian wines. The proposed wine rating system provides an informative assessment of wine quality for producers and consumers and a flexible rating methodology for commercial applications.

Suggested Citation

  • De Nicoló, Gianni, 2025. "Wine ratings and commercial reality," Journal of Wine Economics, Cambridge University Press, vol. 20(1), pages 1-25, February.
    • Handle: RePEc:cup:jwecon:v:20:y:2025:i:1:p:1-25_1
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