Brooklyn Blackout Cake Recipe

Ingredients

• unsalted butter
• 1/2 cup cornstarch
• 2 1/2 cups whole milk
• 1 1/2 cups superfine sugar
• 1 tablespoon light corn syrup
• 1 heaping cup cocoa powder
• 1 teaspoon vanilla extract
• 7 tablespoons unsalted butter
• 13 tablespoons unsalted butter
• 3 large eggs
• 1/2 cup cocoa powder
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 2 1/4 cups all-purpose flour
• 1 cup whole milk