Folle Blanche is a grape variety grown in Western France. It used to be the most popular grape for Armagnac and Cognac (slightly less extent). However, Folle Blanche is highly susceptible to rot and disease. The late 19th century Phylloxera epidemic wiped out most of it, since then it has been replaced by Bacco 22-A which is the only hybrid grape allowed by A.O.C.
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