Pío V Nicaraguan Christmas Cake Recipe

Name: Pío V (Nicaraguan Christmas Cake) Recipe
Ingredients: For the Marquesote Cake; 1 tablespoon unsalted butter, softened; 1 cup fine white cornmeal; 1 cup all-purpose flour, sifted; 4 teaspoons baking powder; 2 teaspoons unsweetened cocoa powder; 1/2 teaspoon ground cinnamon; 6 large eggs, separated and at room temperature; 3/4 teaspoon salt; 1 1/2 cups sugar; 1/2 cup milk; 2 teaspoons pure vanilla extract; For the Sopa Borracha Syrup; 6 cups water; 3 1/2 cups sugar; 4 cinnamon sticks; 1 teaspoon whole cloves; Peel of 1 lemon; 3/4 cup gold rum; 1/2 cup raisins; 12 prunes; For the Manjar Custard; 4 cups milk; 2 cinnamon sticks; 1 cup sugar; 2 tablespoons cornstarch; 4 large egg yolks; 1/8 teaspoon salt; 2 tablespoons butter, cut into 4 pieces and chilled