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ullage
[UHL-ihj]

The empty space that develops in bottles, barrels, or casks as wine evaporates. It's important for the ullage in casks or barrels to be kept to a minimum by TOPPING so that the air exposure won't cause OXIDATION. Older bottles of wine may have a larger space between the CORK and the wine owing to slow leakage or evaporation over time. However, a young bottle of wine with a large ullage could indicate a faulty cork.
Related Links: topping, oxidation, corks
© Copyright Barron's Educational Services, Inc.
1995 based on THE WINE LOVER'S COMPANION,
by Ron Herbst and Sharon Tyler Herbst.

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