Begin by finely chopping the onions and sautéing them in oil over medium heat until they turn a golden hue. Once softened and caramelized, layer the chicken pieces over the onions. Season with turmeric and salt, stirring gently to combine all the flavors.
Cover the pan with a lid and allow the chicken to cook gently over low heat in its own juices. After 10 minutes, pour in 1 cup of water and add the cooked chestnuts. Let the dish simmer until the chicken is fully cooked and the flavors are well absorbed.
Toward the end of cooking, stir in the ground walnuts, julienned red bell pepper, and cornelian cherries. Allow it all to cook for another 1–2 minutes so the ingredients meld without losing texture.
Serve hot as a rich, aromatic main dish perfect for special occasions or a cozy family meal.