Triple Caramel Cake 



Ingredients

• Cake

  • 3 egg whites
  • 2 cups (500 ml) sugar
  • 3/4 cup (180 ml) canola oil
  • 4 egg yolks
  • 2 teaspoons (10 ml) vanilla extract
  • 2 1/2 cups (625 ml) unbleached all-purpose flour
  • 1 1/2 teaspoons (7.5 ml) baking powder
  • 1/2 teaspoon (2.5 ml) baking soda
  • 1/4 teaspoon (1 ml) salt
  • 1 cup (250 ml) milk, hot

• Caramel Buttercream

  • 1 egg 

  • 1 egg white 

  • 1/4 cup (60 ml) water
  • 3/4 cup (180 ml) sugar
  • 2 tablespoons (30 ml) corn syrup
  • 1/4 cup (60 ml) 35% cream, hot
  • 1 1/4 cups (310 ml) unsalted butter, cubed and softened

• Caramel Brittle

  • 1/4 cup (60 ml) water
  • 1 cup (250 ml) sugar
  • 1/4 cup (60 ml) unsalted butter
  • A pinch of salt 

  • A pinch of baking soda
• • 3/4 cup (180 ml) store-bought dulce de leche (see note)