My Kind of Chocolate Birthday Cake

Ingredients

• 3 ounces high-quality milk chocolate (such as Lindt or Perugina)
• 4 ounces bittersweet or semisweet chocolate
• ¹/₃ cup dark brown sugar
• 2 tablespoons unsalted butter
• 1 ½ cups heavy whipping cream
• 5 tablespoons unsalted butter
• ½ cup heavy whipping cream
• + 13 more ingredients
• • 1 tablespoon light corn syrup
  • 4 ounces bittersweet or semisweet chocolate
  • 1 tablespoon unsalted butter
  • Large chocolate shards or curls (from 1- to 2-inch-thick 8-ounce piece bittersweet or semisweet chocolate)
  • husked hazelnuts
  • Candied orange peel strips
  • ½ teaspoon grated orange peel
  • ½ teaspoon coarse kosher salt
  • 2 large eggs
  • 2 tablespoons sugar
  • 1 tablespoon all purpose flour
  • ½ cup hazelnuts
  • 5 ounces bittersweet or semisweet chocolate

Preheat oven to 325°F. Line 13x9x1-inch baking sheet with parchment paper; butter parchment. Combine first 4 ingredients in medium metal bowl. Set bowl over saucepan of barely simmering water; stir until chocolate and butter melt. Remove bowl from over water; stir in salt (mixture will be grainy)...

View full recipe at Epicurious