Exemplary red wine vinegar produced in Tuscany  is aged in wooden barrels for a smooth, round, yet winey flavor. Badia a Coltibuono in Tuscany produces the very best in wines, olive oils, and vinegars on an estate that was once an abbey. In fact, the name means “abbey of good harvest.’’ This red wine vinegar works equally well  for a salad vinaigrette, or to deglaze a pan to make a sauce.