Kulich (Russian Panettone) Recipe

Ingredients

• 1/2 cup golden raisins
• 1/4 cup rum
• 1 cup white sugar, divided
• 3 (.25 ounce) packages active dry yeast
• 1 1/2 cups warm milk (105 degrees F (40 degrees C))
• 6 cups sifted all-purpose flour, divided
• 5 eggs, separated
• 1 pinch salt
• 1 teaspoon vanilla extract
• 1 cup unsalted butter, softened
• 2 tablespoons unsalted butter, softened
• 1/2 cup slivered almonds
• 1/2 cup candied mixed citrus peel
• 2 cups confectioners' sugar
• 1 egg white
• 1 teaspoon lemon juice