Wash prunes and soak in two glasses of cold water for 30 minutes.
Peel and thinly slice onions. Fry in oil until slightly golden. Wash chicken pieces and fry in onions until color changes. Add salt and prunes (with the water they were soaked in) to chicken and cook over medium heat for about 20-30 minutes.
Wash and Peel potatoes and cut into 1-2 cm pieces. Add potatoes and saffron to chicken and prunes and cook over medium heat for another 10 minutes. Serve with Kateh or Polow.