Dark Chocolate Mousse Cake

Bahan-bahan (12 porsi)

• 1 and 3/4 cups (219g) all-purpose flour (spooned & leveled)
• 1 and 3/4 cups (350g) granulated sugar
• 3/4 cup (64g) unsweetened natural cocoa powder* (see Notes)
• 2 teaspoons espresso powder (optional)*
• 2 teaspoons baking soda
• 1 teaspoon baking powder
• 1 teaspoon salt
• 3/4 cup (180g) full-fat sour cream, at room temperature
• 1/2 cup (113g/120ml) vegetable oil
• 2 large eggs, at room temperature
• 1/2 cup (120g/ml) buttermilk, at room temperature*
• 2 teaspoons pure vanilla extract
• 1/2 cup (120g/ml) hot water or black coffee*
• 1 cup (170g) semi-sweet mini chocolate chips tossed in 1 Tbsp flour (optional)
• 1/2 cup (120g/ml) hot water
• 1/4 cup (21g) unsweetened natural or Dutch-process cocoa powder
• 8 ounces (226g) quality semi-sweet chocolate, finely chopped*
• 2 cups (480g/ml) heavy cream, cold
• 2 Tablespoons confectioners’ sugar
• 1/2 teaspoon pure vanilla extract
• 8 ounces (226g) quality semi-sweet chocolate, finely chopped
• 1 cup (240g/ml) heavy cream
• optional, for garnish: fresh berries and/or chocolate shavings