Ingredients

• 1/2 cup milk
• 1/2 cup sour cream
• 1/3 cup white sugar
• 6 cups all-purpose flour
• 2 ounces active dry yeast
• 3 egg yolks
• 1 teaspoon salt
• 2 pounds ground walnuts
• 1/2 cup white sugar
• 1/2 cup butter, melted
• 3 egg whites

Instructions

1. Heat the milk until it is just slightly warm to the touch. Stir in the yeast and sugar. Let stand for 5 to 10 minutes. Stir in the yolks and sour cream until well blended. Add the flour and salt; knead vigorously, on a well floured surface, for 15 minutes. . Cover dough and let it rise for 2 hours.
2. Preheat oven to 350 degrees F (175 degrees C). Divide dough into 5 pieces. Shape the pieces into balls, then roll them out to 1/8 inch thickness. Stir together the nuts, 1/2 cup of sugar and melted butter to make the filling. Spread about 1 to 1 1/2 cups of filling onto the dough. Roll up like a jellyroll and pinch to seal.
3. Place rolls onto baking sheets about 3 inches apart. Brush with egg white, and bake for 35 to 40 minutes in the preheated oven. Cool, slice, and serve.