In a large pot, pour the stock and place the beef brisket. Bring to a boil and reduce to a simmer. Let simmer for 30 minutes.
6 cups chicken stock, 1 lb beef brisket
Add the whole chicken, bring back to a simmer and let simmer for another 30 minutes. Add water to keep the chicken covered during the cooking process as needed.
1 small chicken
Season with salt and pepper to taste, add the leeks and prunes and simmer for another 10 minutes.
2 ¼ leeks, ½ lb moist prunes, Sea salt and freshly ground black pepper to taste
Remove the pot from the heat, remove the chicken and the beef from the pot and dismantle them to bite sized pieces. Place equal parts of meat in each serving bowl.
Serve the soup by pouring some hot liquid with prunes and leeks over the chicken and beef.