Burger Rustique - Bœuf Charolais Moutarde

special bread 44.4% (wheat flour 17.7%, water, oatmeal, rye flour 2.2%, brown flaxseed, yeast, salt, sunflower oil, wheat gluten, wheat bran, wheat malt flour 0.2%), pure ground steak charolais beef cooked origin france 27.7%, emmental 11.1%, mayonnaise [rapeseed oil, water, mustard (water, mustard seeds, vinegar, salt), egg yolk, vinegar, sugar, salt, lemon juice concentrate], semi-dehydrated and pickled tomatoes (tomatoes, rapeseed oil, salt, oregano, garlic), old-fashioned mustard 2.4% (water, mustard seeds, vinegar, salt), dijon mustard 2.4% (water, mustard seeds, vinegar, salt), veal stock (veal broth, beef broth, salt), wheat flour,