Yule Log Cake

Cake

• 4 egg whites, from large eggs, (approx. 5 oz), room temperature
• 1 tbsp cornstarch
• ½ tsp cream of tartar
• 4 tbsp confectioners sugar
• 2 large eggs
• 4 egg yolks, from large eggs
• 5 ½ oz ultrafine sugar
• 2 oz unsweetened cocoa powder (approx. 6 heaping tbsp)
• 1 ½ tsp vanilla extract
• ⅛ tsp salt

Assembly

• 1 tbsp confectioners sugar
• non-stick cooking spray

Frosting

• 16 oz confectioners sugar
• 6 oz unsalted butter, room temperature
• 2 oz unsweetened cocoa powder (approx. 6 heaping tbsp)
• 4 oz whole milk
• 1 tbsp vanilla extract
• confectioners sugar (approx. 2 tbsp)