1. Baking the Cake Base
Preheat your oven to 190°C. Grease a 32 x 24cm Swiss roll tin with cooking oil spray and line the base and sides with baking paper. The key to a perfect sponge cake is aeration, which begins with separating the eggs. Place the yolks in one bowl and the whites in another. Beat the yolks with 2 tablespoons of caster sugar until pale and creamy—this will create a rich, stable base for the batter. In a clean bowl, whisk the egg whites until they form stiff peaks. Gradually add the remaining sugar to the whites, beating until glossy and firm. This process ensures the cake has the lift it needs to roll easily without cracking.

Gently fold the whipped whites into the yolk mixture in three batches, using a light hand to preserve the airiness. Sift the flour, cocoa powder, and cornflour over the egg mixture and fold again until just combined. Spread the batter evenly into the prepared tin, smoothing the surface with a spatula. Bake for 8 minutes or until the sponge is springy to the touch and has a light, even color.

2. Preparing the Roll
While the cake bakes, prepare a large sheet of baking paper and sprinkle it generously with the extra caster sugar. This step is essential to prevent the cake from sticking and to add a subtle sweetness to the crust. When the cake is done, turn it out onto the sugared paper, crust-side down. Let it cool for about 2 minutes, then roll it up gently from one long side, using the sugared paper as a guide. Rolling the cake while it’s still warm helps set its shape, making it easier to fill and re-roll later. Allow the rolled cake to cool completely to room temperature.

3. Crafting the Chocolate Bark
Creating the chocolate bark is one of the most enjoyable parts of this recipe. It not only adds texture but also elevates the visual appeal of the yule log. Wash and reuse the Swiss roll tin, greasing it lightly and lining it with baking paper. Melt the chocolate melts in a microwave or over a double boiler until smooth. Spread the melted chocolate evenly into the prepared tin, ensuring an even thickness. Let it set at room temperature for about 30 minutes until firm. Once hardened, break the chocolate into rustic shards that mimic the texture of tree bark. These shards will add a professional finish to your dessert.

4. Making the Chocolate Icing
The chocolate icing is the crowning glory of this yule log, tying together all the flavors with its rich, velvety texture. Combine the cream, chocolate melts, and butter in a small saucepan over low heat. Stir continuously until the mixture is smooth and glossy, taking care not to let it boil. Transfer the icing to a bowl and refrigerate for 15 minutes to allow it to thicken slightly. Once cooled, add the icing sugar and cocoa powder, then beat with an electric mixer until the icing is thick and fluffy. This step ensures the icing has a spreadable consistency that holds its shape.

5. Whipping the Brandy Cream
The brandy cream filling is where this yule log truly shines. It adds a layer of sophistication and depth that sets it apart from other holiday desserts. In a mixing bowl, combine the thickened cream, icing sugar, and brandy. Beat the mixture until it forms firm peaks, ensuring it’s stable enough to hold its shape when spread over the sponge. For those who prefer an alcohol-free version, vanilla extract or cherry juice makes an excellent substitute.

6. Assembling the Yule Log
Carefully unroll the cooled cake, taking care not to crack it. Spread an even layer of dark cherry jam across the surface, allowing its tartness to balance the sweetness of the other components. Follow with a layer of the whipped brandy cream, using a spatula to smooth it out evenly. Gently re-roll the cake, using the baking paper to guide the process. Transfer the rolled cake to a serving platter and spread the chocolate icing generously over its surface, creating a textured finish that resembles tree bark. Decorate with the chocolate shards, arranging them artfully to enhance the natural, rustic look. Dust with icing sugar for a snowy, festive touch.