Oxidised wine is wine that has been exposed to excessive oxygen, causing unwanted changes in colour, aroma and flavour. Oxidation can make white wine darker or brown, while red wine may lose its fresh fruit and develop brick-coloured or dull tones. Aromas can include bruised apple, nuts, sherry-like notes, stale fruit or vinegar-like character, depending on the wine and the stage of deterioration.
Oxygen can enter wine during production, bottling, storage or service. Excessive headspace in an opened bottle, a damaged closure, poor storage or prolonged exposure to air can accelerate oxidation. Sulphur dioxide and other winemaking controls help protect wine, but they do not prevent all oxygen-related changes.
Oxidised white wines may show brown or deep gold colour, bruised apple, stale nuts and loss of fresh fruit. Oxidised reds may appear brick-coloured or dull, with faded fruit and flat or tired flavours. The wine may also lose its balance and freshness.
Some wines are deliberately made or aged with controlled oxygen exposure. Sherry styles such as Oloroso, Vin Jaune from the Jura and Tawny Port are intentionally oxidative and develop characteristic nutty, savoury and dried-fruit aromas. These are not automatically faulty. Oxidised wine refers to unwanted or excessive deterioration relative to the intended style.
Example: an opened bottle of white wine left unrefrigerated for several days may develop bruised-apple aromas and lose freshness through oxidation.
Chef’s note: distinguish intentional oxidative styles from a bottle that has deteriorated. A wine should be assessed against its intended style, not judged solely by its colour or nutty aromas.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
