Mirepoix or other aromatics may be added for more flavor. The technique used for the creation of this caramelization mixture is called mirepoix. It was formerly the seat of the Bishop of Mirepoix. From 2013 to 2016 he was Artistic Director of Mirepoix Musique in France. The resumption of Mirepoix wasn't accomplished until his own reign, however. He never visited Mirepoix, but he did collect a year's income.