Answer:
Balsamic vinegar is made from grape pressings which have not been made into wine. It is aged in barrels similar to wine. It is generally very deep burgundy and slightly sweet and syrupy, depending how long it has been aged. Other vinegars such as white wine or rice wine vinegar are made from wine in a controlled process. The sugar in the mixture becomes alcohol and the alcohol becomes acetic acid in order to produce vinegar.