Chocolate Mousse Cake: Decadent & Doable Baking!

Ingredients

• 1 ½ cups (190g) all-purpose flour
• ¾ cup (60g) unsweetened cocoa powder
• 1 ½ teaspoons baking powder
• 1 ½ teaspoons baking soda
• ¾ teaspoon salt
• 1 ½ cups (300g) granulated sugar
• ¾ cup (180ml) buttermilk, at room temperature
• ¾ cup (180ml) vegetable oil (canola or sunflower)
• 2 large eggs, at room temperature
• 2 teaspoons vanilla extract
• ¾ cup (180ml) boiling water
• 8 ounces (225g) good-quality bittersweet chocolate (60-70% cacao), chopped
• 1 cup (240ml) heavy cream, cold
• 2 large eggs, separated
• ¼ cup (50g) granulated sugar
• 4 ounces (115g) semi-sweet chocolate, chopped
• ½ cup (120ml) heavy cream