Circassian Chicken (Çerkez Tavugu)

Place chicken, meat-side down, in a large saucepan and add broth. Bring to a simmer over high heat. Reduce heat, cover and simmer, turning occasionally, until an instant-read thermometer inserted in the thickest part without touching bone registers 160 degrees F, 25 to 30 minutes.

Meanwhile, process walnuts and garlic in a food processor to a fine-textured paste. Add 1/4 cup cilantro; pulse just to combine. Mix salt, coriander, paprika, Aleppo, savory (or tarragon), cinnamon, fenugreek and saffron in a small bowl.

Transfer the chicken to a clean cutting board to cool. Strain the broth (discard the solids).

Wash and dry the pan. Add butter and oil and heat over medium heat until the butter is melted. Add onion and cook, stirring, until very soft but not browned, 3 to 5 minutes. Add the spice mixture and cook, stirring, for 30 seconds. Add the broth and bring to a simmer over high heat. Reduce heat to medium-low and add the walnut mixture; whisk until smooth. Cook, whisking occasionally, until the sauce starts to thicken, 3 to 5 minutes. Remove from heat.

Shred the chicken (discard the bones) and place in a large bowl. Add the sauce along with 2 tablespoons vinegar and the remaining 1/4 cup cilantro. Refrigerate, stirring occasionally, until cold, at least 6 hours and up to 1 day.

Stir the remaining 1 tablespoon vinegar into the chicken. Let stand for 30 minutes. Serve topped with more chopped walnuts, cilantro, Aleppo, red onion and pomegranate seeds, if desired.