noble-mold

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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