noble rot

noble rot

noun Winemaking.
the fungus Botrytis cinerea, which is cultivated in some winemaking processes, especially in the making of French Sauternes, where the ripened grapes become shriveled as a result of its introduction, thereby concentrating the juice and increasing the sugar content.
Also called noble mold.


Origin:
1920–25

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World English Dictionary
noble rot
 
n
winemaking a condition in which grapes are deliberately affected by Botrytis cinerea, resulting in the shrivelling of the ripened grapes, which in turn leads to an increased sugar content
 
[C20: translation of French pourriture noble]

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