Nut Cake - cooking recipe

Ingredients

1 c. soft butter
3 eggs, separated
1 tsp. baking powder
1 tsp. baking soda
1 1/2 c. sugar
2 c. flour
1 c. sour cream
1/2 c. chopped black walnuts

Preparation

Cream butter, sugar and egg yolks.
Add sour cream and walnuts.
Add baking powder, baking soda and flour.
Beat egg whites and fold into batter.
Batter is thick.
Bake at 350\u00b0 for 40 minutes in a tube pan or 30 minutes in an oblong pan.
Sprinkle with confectioners sugar after it cools.