Ingredients:
- 1.5 cups all-purpose flour
- 1 tsp baking powder
- 0.5 tsp fine sea salt
- 5 large eggs, separated
- 1 cup granulated sugar
- 0.33 cup whole milk
- 1 tsp pure vanilla extract
- 12 oz evaporated milk
- 14 oz sweetened condensed milk
- 0.5 cup heavy whipping cream
- 1 tsp ground cinnamon
- 1.5 cups heavy whipping cream, cold
- 3 tbsp powdered sugar
- 1 tsp vanilla bean paste
Instructions:
- Preheat your oven to 350°F (180°C) and grease a 9x13 inch pan. Note: Do not flour the pan; we want the cake to climb the sides for maximum height.
- Separate the eggs. Place 5 large egg yolks in one bowl and 5 whites in another.
- Cream the yolks. Beat the yolks with 0.75 cups of granulated sugar until they turn a pale, creamy yellow.
- Incorporate liquids. Stir in 0.33 cup whole milk and 1 tsp vanilla extract. Then, gently fold in the 1.5 cups all purpose flour, 1 tsp baking powder, and 0.5 tsp salt.
- Whip the whites. In a clean bowl, beat the 5 egg whites until soft peaks form. Gradually add the remaining 0.25 cup sugar and beat until peaks are stiff and glossy.
- Combine the mixtures. Fold the egg whites into the yolk batter in three batches. Fold until no white streaks remain but the batter stays voluminous.
- Bake the sponge. Pour into the pan and bake for 30 minutes until a toothpick comes out clean and the top springs back.
- Whisk the soak. While the cake cools slightly, whisk together 12 oz evaporated milk, 14 oz sweetened condensed milk, 0.5 cup heavy cream, and 1 tsp cinnamon.
- Infuse the cake. Use a fork to poke holes every half inch. Pour the milk mixture slowly until the cake has completely drunk up the liquid.
- Chill and top. Refrigerate for at least 4 hours. Before serving, whip 1.5 cups heavy cream with 3 tbsp powdered sugar and 1 tsp vanilla bean paste until stiff peaks form, then spread over the cake.