1 c. sour cream
3 tbsp. butter
4 tbsp. sugar
1/8 tsp. baking soda
1 1/2 tsp. salt
2 eggs
1 cake yeast, crumbled (or equiv. powdered yeast)
3 c. all-purpose flour

Bring sour to boil in large saucepan. Remove from heat; stir in butter, sugar, baking soda and salt. Mix until well blended. Cool to lukewarm. Add eggs, unbeaten, and yeast. Stir well until yeast is dissolved. Mix flour in with spoon. Turn on lightly flour board. Knead a few seconds to form a smooth ball. Cover and let stand 5 minutes. Divide dough into 3 parts. Roll each ball on board. Spread with filling (see below). Roll up as for jelly roll. Cover and let rise in warm place until light 1 1/2 to 2 hours.

Bake at 350°F for 30 to 35 minutes.

FILLING:

1 lb. walnuts, ground
1 c. milk
1 egg
1/2 c. (1 stick) butter
1 c. sugar

Combine all ingredients; cook until thick. Cool before spreading on dough. Make before you start on the dough.