As long as the cork has stayed moist you'll be fine, if it has dried out and shrunk, then air will get in and the carbon dioxide will have left- vinegar time.
Which way up did you store it?
@Dammit started
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As long as the cork has stayed moist you'll be fine, if it has dried out and shrunk, then air will get in and the carbon dioxide will have left- vinegar time.
Which way up did you store it?