Description (also sulphur-hard) for the smell and taste of a wine in the context of a wine talk. This manifests itself in the typical, volcanic sulphur odour, a taste of freshly ignited sulphur wood, as well as a hard, rough and pungent sensation in the nose and palate.
Common causes are excessive sulphurisation during winemaking, which can also lead to a sulphur bloom, as well as improper preservation of wine containers (especially wooden barrels) and bottles. A slight "sulphur bloom" is relatively common in young wines, but this quickly disappears as soon as the wine is poured into the glass. Excessive sulphurisation can lead to the wine defect sulphuric acid firn due to the oxidation of sulphur dioxide in the wine. For the maximum limits for sulphur in wine, see sulphurous acid.
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Markus J. Eser
Weinakademiker und Herausgeber „Der Weinkalender“