Wine Glossary

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Ullage
The air space between the top of the wine in a container and the cork. Most wines are bottled for immediate consumption and the ullage should be small, and of no concern. In older bottles the ullage can be an indicator of the quality of the wine. The ullage has an influence price - wines with a lot of ullage will fetch a much lower price than those with wine up to top-shoulder or into the neck of the bottle. A large ullage can suggest deterioration of the wine through oxidation.