Homemade Ding Dongs | Food Stuff

Ingredients

• 3/4 tsp baking powder
• 2 tsp baking soda
• 1 1/2 cups well-shaken buttermilk
• 1 1/2 cups hot brewed coffee
• 1/4 cup light corn syrup
• 2 egg whites
• 3 eggs
• 2 1/2 cups flour
• 1 cup heavy cream
• 1 1/4 tsp salt
• 3 ounces fine-quality semisweet chocolate
• 12 oz semisweet chocolate, chopped into 1/2-ounce pieces
• 1/2 cup sugar
• 3 cups sugar
• 1 Tbsp unsalted butter
• 1 1/2 cups unsweetened cocoa powder (not Dutch process)
• 3/4 tsp vanilla
• 1 1/2 tsp pure vanilla extract
• 3/4 cup vegetable oil
• 2 Tbsp water