Crème de Cacao Mousse Tart: A Chocoholic's Dream

Ingredients

• 1 ½ cups (192g) all-purpose flour, plus more for dusting
• ⅓ cup (30g) unsweetened cocoa powder
• ½ cup (100g) granulated sugar
• ¼ teaspoon salt
• ½ cup (113g) cold unsalted butter, cut into cubes
• 2 large egg yolks
• 2 tablespoons (30ml) ice water
• 8 ounces (225g) bittersweet chocolate (70% cacao), finely chopped
• ½ cup (120ml) heavy cream
• 2 tablespoons (30ml) unsalted butter, cut into pieces
• ¼ cup (60ml) crème de cacao liqueur
• 3 large eggs, separated
• ¼ cup (50g) granulated sugar
• Pinch of salt
• Chocolate shavings (optional)
• Fresh raspberries (optional)
• Cocoa powder (optional)