Ingredients for the Layers: - 2 cups (400 g) granulated sugar - 1 ¾ cups (220 g) all-purpose flour - 1 cup (85 g) unsweetened cocoa powder - 1 heaping teaspoon (5 g) baking powder - 1 heaping teaspoon (7 g) baking soda - 1/3 teaspoon (2 g) salt - 2 large eggs - 1 cup (240 ml) milk - ½ cup (120 ml) vegetable oil - 1 teaspoon (3 g) coffee - 1 cup (240 ml) boiling water - 2 teaspoons (10 ml) vanilla extract Bake in a preheated oven at 350°F (175°C) for 30 minutes. Let the layers cool for at least 10 minutes before removing them from the molds. The size of the baking trays is 9 inches in diameter. Ingredients for the Frosting: - 3 egg yolks - 1 heaping tablespoon (20 g) sugar - 2/3 cup (140 ml) heavy cream - 2 chocolate bars (200 g) - 2/3 cup (140 ml) heavy cream - 1 heaping tablespoon (20 g) sugar After preparing the frosting, assemble the cake right away to ensure it spreads smoothly and evenly. If the frosting hardens, gently melt it using a double boiler, then whip it with a mixer until smooth and creamy.