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Bird's Milk Cake with Mascarpone

Course Dessert
Cuisine Eastern European
Keyword agar-agar, bird's milk, cake, chocolate, mascarpone, meringue, soufflé, sponge
Prep Time 45 minutes
Cook Time 15 minutes
Servings 12 portions
Calories 445kcal


for 2 layers of sponge (8" diameter, 1/2" thick)

  • 120 g egg whole
  • 60 g sugar fine
  • 0.4 tsp salt fine
  • 72 g wheat flour all-purpose
  • 0.5 tsp baking powder
  • 16 g vegetable oil neutral flavor, e.g., avocado
  • 0.5 tsp vanilla extract

for souffle (8" diameter, 3" thick)

  • 160 g egg whites room temperature
  • 1 tsp dry egg whites
  • 8 g agar powder
  • 140 g water cold
  • 360 g sugar fine
  • 50 g glucose optional
  • 1 g citric acid
  • 227 g mascarpone softened to room temperature

for sponge feed

  • 50 ml milk
  • 1 tsp vanilla extract

for chocolate glaze

  • 150 g dark chocolate
  • 90 g butter


for sponge

  • Preheat oven to 350F. In a small bowl, combine eggs, sugar and salt and whip into a thick cream-color foam.
    Note 1: One large egg is about 56g on average, without the shell. It is less than you need for the recipe.
    Note 2: Start hydrating the agar. In a saute pan, combine 80 ml of water and 2 tsp agar powder.
    Note 3: Make sure your Mascarpone is out of the refrigerator to become soft by the time you ready to use it.
    Making Sponge for Bird's Milk Cake
  • Add flour and baking powder t the foam and combine well with a spatula.
    Making Sponge for Bird's Milk Cake
  • Add oil and vanilla extract and combine well with a spatula.
    Making Sponge for Bird's Milk Cake
  • Line baking sheet with parchment paper. I discovered the best way of baking a sponge without leftovers by using a perforated ring. Spread evenly the batter inside the 8" D ring and bake for 15 minutes.
    Making Sponge for Bird's Milk Cake
  • Do not worry about the batter going through the perforation. It won't.
    Making Sponge for Bird's Milk Cake
  • When baked, cut the sponge separating it from the ring. Remove the ring.
    Making Sponge for Bird's Milk Cake
  • Flip the sponge parchment paper up and peel the paper. Let the sponge cool on the rack.
    Making Sponge for Bird's Milk Cake

for feeding the sponge

  • Use an 8" D cake mold with removable bottom. Place the sponge on the bottom.
    Note: Line the sides of the mold with an acetate cake collar for better-looking sides.
  • In a cup, combine milk and vanilla extract. Stir until sugar is dissolved. Using a silicone brush, soak the sponge evenly.

for souffle

  • To make this part easy, you need a culinary thermometer and a stand mixer. In a bowl of a stand mixer, combine room temperature egg whites and dry egg whites and whip them on medium speed until "shaving foam" thick and stop.
    Note: Since we have to whip the whites without sugar, dry egg whites stabilize the foam instead.
    Whipping Meringue for Bird's Milk cake
  • Combine agar and water. Bring to simmer over medium heat and cook until thick.
  • Add sugar and glucose and cook stirring until the temperature of the syrup is 230F. Turn off the heat.
    Note: Stirring is important for two reasons — it prevents agar from burning on the bottom of the pan and redistributes the heat evenly.
    Making agar-agar sugar syrup
  • Give the syrup a few seconds to cool. Meanwhile, turn the mixer with the egg whites foam back on, high speed. Add citric acid and sugar syrup (should be not lower than 201F), slowly streaming it down the side of the bowl. Whip for 1-2 minutes.
  • Stop the mixer, add softened to room temperature mascarpone. Whip it at high speed for about 30 seconds. The foam will slightly deflate and become more liquidy, which is expected. Stop the mixer and fold the mixture a few times using a spatula. Fill the mold ring with the mixture. Work quickly, because agar sets at room temperature.

for toppings/glaze

  • For the traditional chocolate glaze, melt chocolate combined with butter until 122F. The glaze should be 113F to successfully cover the cake.
    You can also try topping the souffle with shaved chocolate and decorate the cake with chocolate pearls by Valrhona.


Calories: 445kcal | Carbohydrates: 56g | Protein: 7g | Fat: 21g | Saturated Fat: 13g | Cholesterol: 76mg | Sodium: 167mg | Potassium: 89mg | Fiber: 1g | Sugar: 44g | Vitamin A: 597IU | Calcium: 74mg | Iron: 1mg