But what would it taste like?

From CNN.com tonight:

Archaeologists find 300-year-old wine cellar
Eight glass bottles have been unearthed in a brick-walled space that may have been the wine cellar of a house dating from the close of the 1600s in Jamestown.

The big question is if they found the corks in tact and wine in the bottles what would the wine taste like after 300 years? A few years back a bottle from the mid-1700s was opened and apparently tasted like vinegar. Yet, 1843 Ch