Ingredients:
- 4 large eggs, separated
- 3/4 cup granulated sugar, divided
- 3/4 cup cake flour, sifted
- 2 tbsp vegetable oil
- 1 tsp strawberry extract
- 1/4 tsp cream of tartar
- 1/8 tsp salt
- 1 cup heavy whipping cream, cold
- 4 oz cream cheese, softened
- 1/2 cup powdered sugar
- 1 tsp vanilla extract
- 1 cup fresh strawberries, thinly sliced
Instructions:
- Line a 10x15 inch jelly roll pan with parchment paper, leaving an overhang on the sides.
- Whisk the 4 egg yolks with half of the granulated sugar and vegetable oil until the mixture is pale and thick. Stir in strawberry extract and salt.
- Gently sift in the cake flour and use a spatula to fold until just combined, ensuring you do not overmix.
- In a separate clean bowl, whip the 4 egg whites and cream of tartar until soft peaks form. Gradually add the remaining sugar, whipping until stiff, glossy peaks stand straight up.
- Fold one-third of the meringue into the yolk batter to lighten it, then gently fold in the remaining meringue until smooth.
- Spread the batter evenly in the prepared pan and bake at 350°F (175°C) for 13 minutes until the top springs back when touched.
- Immediately after baking, roll the cake in a clean kitchen towel while still warm to train the sponge to hold a curved shape. Let it cool completely.
- For the filling, beat softened cream cheese with powdered sugar and vanilla extract until smooth.
- Whip the heavy cream to stiff peaks and fold it into the cream cheese mixture until combined.
- Unroll the cooled sponge, spread the strawberry cream filling evenly over the surface, and scatter the sliced strawberries across the top.
- Carefully roll the cake back up into a spiral and refrigerate for 7 hours to set before slicing.