Moist Coffee Chocolate Cake - Rich Layers Treat - Cook with Carla

Ingredients

• 360 g brewed black coffee (or mix 2 teaspoons of instant coffee with water)
• 150 g soft brown sugar
• 360 g plain flour
• 75 g Dutch-process cocoa powder (unsweetened)
• 2 tablespoons of cornstarch
• 300 g white granulated sugar
• 1 ½ teaspoons of baking soda
• 1 ½ teaspoons of baking powder
• 1 ½ teaspoons salt
• 270 g sour cream (14-18%, room temperature)
• 165 g cooking oil (vegetable)
• 3 teaspoons of vanilla essence
• 3 large eggs (at room temperature)
• 400 g unsalted butter (softened)
• 660 g icing sugar
• 2 teaspoons vanilla essence
• 2-2 ½ tablespoons brewed coffee (cool it before use)
• 1 tablespoon espresso powder (optional, for a bolder coffee kick)