Chocolate Oblivion

Ingredients

• 2 1/2 teaspoons instant coffee or 2 1/2 teaspoons espresso
• 2 cups cake flour
• 3 1/4 cups sugar, divided
• 3/4 cup unsweetened cocoa
• 1 1/4 teaspoons baking soda
• 1/2 teaspoon baking powder
• 3/4 teaspoon salt
• 8 pasteurized eggs, divided
• 1 cup sour cream
• 1/2 cup oil
• 2 1/2 teaspoons vanilla, divided
• 12 ounces semisweet chocolate, divided
• 3 ounces unsweetened chocolate
• 15 tablespoons butter, divided
• 1 1/2 cups heavy cream, divided