Grandma's Prune Soup

1 Box (1 lb.) prunes

1/4 ts Salt

3 qt Water

3 tb Flour

1/2 Pt. sour cream

Cook prunes and salt in water until done. Remove from heat. Gradually add flour to sour cream and whip until very smooth. Stir one cup of the prune liquid into sour cream mixture. Return mixture to the prunes. Slowly bring to a boil, stirring constantly, until it thickens. (Serves 6)