Chicken with walnuts (Pule me arra)

Ingredients

 * 500 gr. chicken
 * 3-4 Tbs butter
 * 1/2 cup of tea peeled walnuts
 * 5-6 cloves garlic, crushed
 * pepper
 * salt
 * 1-2 Tbs flour
 * 2 Tbs vinegar
 * 5-6 cups water

Directions

 * 1) Simmer chicken in water seasoned with salt to taste until tender, about 1 hour.
 * 2) Remove chicken from cooking water, reserving 1-cup stock.
 * 3) Cool chicken slightly, then cut into 4 portions.
 * 4) Melt 2 tablespoons of butter in large skillet.
 * 5) Add chicken pieces and saute until lightly browned.
 * 6) Remove chicken pieces and keep warm.
 * 7) Melt the remaining butter in a saucepan.
 * 8) Add flour and cook, stiring constantly, until lightly browned.
 * 9) Add stock and bring to a boil, stirring constantly to avoid lumps.
 * 10) Add vinegar, garlic, walnuts and salt and pepper to taste.
 * 11) Stir and cook until warm. Spoon sauce over chicken pieces.