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Barbera d'Asti—including Barbera d'Asti superiore—and Nizza are two DOCG (Denominazione di Origine Controllata e Garantita) wines produced in Piemonte (Italy) from the Barbera grape variety. Differences among them arise in the production specifications in terms of purity, ageing, and zone of production, in particular with concern to Nizza, which follows the most stringent rules, sells at three times the average price, and is considered to have the highest market value. To guarantee producersdoi:10.3390/beverages6040063 fatcat:r6bbnqdkcbbd3i6vq6pw2xbrii