Potica (Povitica)

Name: Potica (nut roll)
Ingredients: 250 grams (2 1/2 cups) all-purpose flour; 25 grams (2 tablespoons) granulated sugar; 1 packet (7 grams) active dry yeast; 1/2 teaspoon salt; 120 ml (1/2 cup) whole milk, lukewarm; 1 large egg (room temp); 45 grams (3 tablespoons) unsalted butter, melted and cooled; 1/4 teaspoon vanilla (optional); For the Walnut Filling:; 200 grams (2 cups) finely chopped walnuts; 100 grams (1/2 cup) granulated sugar; 60 ml (1/4 cup) whole milk; 1/2 teaspoon vanilla extract; 1/2 teaspoon rum (optional); 1 large egg (separated); 55 grams (1/2 stick or 4 tablespoons) unsalted butter; 1/2 teaspoon ground cinnamon; 1/4 teaspoon salt

European dessert bread, cherished for generations during Christmas and Easter, featuring intricate swirls and a rich filling of finely chopped walnuts. A classic delight of nutty richness.