High Quality Content by WIKIPEDIA articles! Vidal Blanc is an inter-specific hybrid variety of white wine grape, a cross of Ugni Blanc and Rayon d'Or (Seibel 4986). It manages to produce high sugar levels in cold climates while maintaining good acid levels. Vidal Blanc was developed in the 1930s by French breeder Jean Louis Vidal; his primary goal in developing the variety was to produce vines suitable for the production of Cognac in the Charente region of France. However, due to its winter hardiness this grape variety is cultivated most extensively in Canada and in the north-eastern United States. It is somewhat resistant to powdery mildew.

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