Combine the ingredients. Adjust vinegar to taste, since it has a strong flavor. Store in a covered container in the refrigerator. Makes about 1 cup. Per tablespoon: 1 calorie, 0 chol, 0 dietary fiber, 0 fat, 7mg sodium Author's Note: If you don't have balsamic vinegar, you may substitute another kinds. But, if this be the case, start with water and vinegar in equal proportions.