Triple chocolate fudge cake recipe

Ingredients

• 2¼ cups all purpose flour
• 1 cup unsweetened cocoa powder
• 2¼ tsp baking soda
• 1¼ tsp baking powder
• 1 tsp salt
• ½ tsp ground cinnamon
• 2 ½ ounces unsweetened chocolate, chopped
• 1 cup milk
• 1¼ cups hot, strongly brewed coffee
• 2 eggs
• 1 cup mayonnaise
• 1½ tsp vanilla extract
• 2¼ cups sugar
• White chocolate mousse
• Sour cream chocolate icing
• 4 ounces white chocolate, chopped
• 1 cup heavy cream
• 1 egg white
• 1 tbsp sugar
• 12 ounces bittersweet or semi sweet chocolate, chopped
• 1 stick- 4 ounces unsalted butter
• 2 tbsp light corn syrup
• ¼ cup half-and-half at room temperature
• ½ cup sour cream, at room temperature