RecipeDelish

Ingredients

• 4 eggs, separated
• ¾ cup granulated sugar
• ½ cup all-purpose flour
• ¼ cup cocoa powder
• 1 tsp baking powder
• ¼ tsp kosher salt
• 1½ cup heavy cream
• 2 tbsp powdered sugar, plus more for dusting
• 1 tsp vanilla extract
• 1 cup dark chocolate chips
• ½ cup heavy cream, for the ganache

Steps

1. Heat the oven to 350°F. Line a 10×15-inch jelly-roll pan with parchment and grease it lightly.
2. Beat the egg yolks with the sugar until pale and thick. Whisk in the flour, cocoa, baking powder and salt.
3. Beat the egg whites with the salt until stiff peaks form, then fold them gently into the batter in two additions.
4. Spread the batter evenly in the pan and bake 12–15 minutes until the top springs back.
5. Turn the hot cake onto a clean kitchen towel dusted with powdered sugar, peel off the parchment and roll it up in the towel. Cool completely rolled — this trains the shape.
6. Whip the cream with powdered sugar and vanilla. Unroll the cake, spread with cream and roll it back up without the towel.
7. Heat the ganache cream until steaming, pour over the chocolate chips, rest 2 minutes and stir smooth. Spread over the log, score lines with a fork for bark, and dust with powdered sugar.