Taste impression (also mushroom taste) of a wine, which is described as dull, mouldy, musty, mushroomy, earthy, sticky and mouldy. A pungent, vinegar-like odour may also be involved.

1 = grey rot (Botrytis), 2 = green rot, 3 = black rot, 4 = vinegar rot
A common cause is grapes infected with fungal organisms. These can be fungal genera or species such as Aspergillus, Botrytis cinerea and Penicillium. These can produce the mycotoxin patulin, which is toxic in certain quantities, through metabolism. The infestation leads to various types of grape rot such as green rot, white rot or grey rot (Botrytis). Rot can also be initiated by external influences such as pest...
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