Opera cake

Ingredients

• • 3/4 cup (180 ml) unbleached all-purpose flour
  • 1/2 cup (125 ml) ground almonds
  • 1/2 teaspoons (2.5 ml) baking powder
  • A pinch of salt 

  • 3 egg whites, at room temperature
  • A pinch of cream of tartar
  • 3/4 cup (180 ml) sugar
  • 2 eggs
  • 1/2 teaspoon (2.5 ml) vanilla extract
  • 1 tablespoon (15 ml) unsalted butter, melted and cooled

• Buttercream

  • 2 egg yolks 

  • 1/4 cup (60 ml) water
  • 1/2 cup (125 ml) sugar
  • 1 tablespoon (15 ml) corn syrup
  • 1 cup (250 ml) unsalted butter, tempered for 20 minutes
  • 1/2 teaspoon (2.5 ml) instant coffee
  • 1 teaspoon (5 ml) hot water
  • 1/2 oz (15 g) melted and tempered chocolate
  • 1/2 teaspoon (2.5 ml) vanilla extract

• Soaking Syrup

  • 1/2 cup (125 ml) espresso or strong coffee, hot
  • 2 tablespoons (30 ml) sugar

• 
Ganache

  • 2 oz (55 g) semisweet chocolate, chopped
  • 2 tablespoons (30 ml) 35% cream, boiling