To prepare the wild duck gumbo rice recipe, you'll need: 1 1/2 cups white rice 2 tablespoons butter 2 teaspoons kosher salt 1 cup chopped fresh thyme 1 teaspoon ground nutmeg 1 tablespoon dried oregano 1/2 cup diced scallions 1 pound chopped wild garlic 2 tbsp. ground cumin 1/4 cup ground coriander 2 cups chopped dill weed 1/2 c. chopped celery, if desired 1 chopped green bell pepper, chopped 1/2 teaspoon each ground cinnamon, ground allspice, salt and ground black pepper to taste 3 cups shredded cooked chicken breast, cut into bite-sized pieces, 4 cups brown sugar, 1/4 teaspoon salt, and 1/8 teaspoon pepper. Bring to a boil over medium-high heat, then reduce the heat to medium and simmer until the chicken is cooked through and the rice is tender, 20 to 25 minutes. Remove from heat and let stand 5 minutes before serving.