3/4 C     Butter or Margarine
    3 C        Sugar
    3 large   Egg
    6            Bananas, very ripe
    1/2 tsp    Salt
    4 1/2 C   All-purpose Flour
    3 tsp       Baking Soda
    16 oz      Sour Cream
    2 tsp       Vanilla extract
    2 tsp       Ground cinnamon
    1 tsp       Ground cardamom
    1 C         Nuts, chopped optional
    3 tbs       Sugar
    1 tsp       Ground cinnamon

      Preheat oven to 300F. Grease four 7x3 inch loaf pans, and dust lightly with a cinnamon and sugar mixture.
In a large bowl, cream butter and sugar. Mix in eggs, mashed bananas, sour cream, vanilla, cardamom and cinnamon. Add salt, baking soda, and flour to above mixture, and mix well.Stir in nuts.*br* Divide into prepared pans. Bake for 1 hour, or until toothpick inserted in center comes out clean.