6 c. flour
1 pt. sour cream
1 lb. butter
1 tsp. salt
1 tsp. vanilla
1 c. milk
6 egg yolks
2 tbsp. sugar
1 yeast cake
1 egg white

Dissolve yeast in warm milk. Combine egg yolks, sour cream, and vanilla in separate bowl. Rub butter into flour add salt and sugar, mix well. Add egg and yeast mixtures and mix well to form a soft dough. Knead for about 10 minutes. Separate dough in half, knead into 2 balls. Let rest for 1/2 hour. Roll out on lightly floured board to 1/2 inch thickness. Spread nut or poppy seed filling on dough and roll as for jelly roll. Let stand 1/2 hour. Brush with beaten egg white, just before putting in oven. Bake at 350 degrees in ungreased pan, until golden brown.