It is in accordance with this tradition that we develop our recipes from French mustard seeds ground in a stone mill, Guérande salt and Orleans vinegar. Recognized by royal ordinance, the character of Orleans mustard is based on three pillars: an ancestral recipe, unique know-how and a selection of the best ingredients. The Brotherhood of Maîtres Vinaigriers & Mustardiers d'Orléans has been recognized by royal ordinance since 1580. Talk about a mustard other than that of Orleans and it comes to our attention instantly.