In the Loire Valley village of Charentes, surrounded by the region’s sleepy rivers and apple orchards, producers blend diced French olives, Herbes de Provence, vinegar, and mustard seeds to make Domaine des Vignes Olive Dijon Mustard. The hearty spice of Dijon Mustard is bolstered by the briny bite of green and black olives, making a complex condiment that invigorates vinaigrettes, enlivens sauces, and adds bold flavor to fish and meat.