String beans in walnut sauce

Ingredients:

1 lb. fresh string beans
1/4 lb. shelled walnuts
1/4 cup red wine vinegar
1/4 cup onion minced
1 cup chicken stock
2 garlic cloves minced
2 teaspoons sweet paprika
3 tablespoons cilantro freshly and finely chopped
1 1/2 teaspoons salt
3 quarts water

Preparation:

In mill or with a mortar and pestle, pulverize the walnuts into a paste.
Combine the stock, onions, garlic, paprika, vinegar, salt, walnut paste and cilantro. Mix thoroughly.
Trim but do not cut the string beans.
Bring the water to boil, add the string beans and boil them for 10 minutes. Drain the beans well.
Add the beans to the walnut paste mixture and toss until coated completely with the mixture.
Serve at once.