A very fine vinegar type. As with other wine vinegars , the best are
very expensive and justifiably so. Sherry vinegars are made from a
blend of wines , just like sherry , and are left to mature in the wood
for a long time. They develop fat , rich flavour and a mellow
complexity. Like traditional Balsamic vinegar , excellent Sherry
vinegar occupies a special place outside the vinegar spectrum.
More info on Vinegar at http://www.harvestfields.ca/CookBooks/Vin/vinegar.htm