Making meringue sheet: Preheat the oven to 150°C (top-bottom). Whip 150 ml of egg whites with 250 g of fine sugar for about 10 minutes until a stiff glossy meringue forms (no grains between thumb and forefinger). Sift in the cornstarch and icing sugar and fold in briefly. Line a baking sheet with baking paper and spread the meringue mixture into a rectangle, evenly thick all over. Optional: create patterns on the top. Bake for 25 minutes in the oven until the top is lightly crispy and soft inside.
Let cool, place new baking paper on top and turn over so that the bottom is on top. Carefully remove the original baking paper.
Filling & rolling: Whip the coconut cream with vanilla powder until fluffy. Evenly spread the filling over the cooled meringue sheet, leaving a small edge free on one short side. Drizzle the nut paste over it. Distribute raspberries and chopped pistachios over the filling. Roll tightly from the short side closest to you, with the seam underneath. Refrigerate for at least 4 hours to set.
Decoration: Crystallized pink leaves: Pick the leaves, brush thinly with egg white, roll in sugar, let dry on baking paper (not in the oven), for 1 day.
Meringue decoration: Whip 100 ml of egg whites with 100 g of fine sugar to stiff meringue, fold in 80 g of icing sugar. Fill a piping bag and pipe patterns on baking paper. Dry in the oven at 90°C for 1 hour.
Remove the roll from the fridge, make some dollops of leftover coconut-pistachio filling on top. Finish with crystallized leaves, swans, stars, and bows. Optionally dust with powdered sugar for a snow effect.
Tips
- Make sure the mixing bowl and whisks are grease-free.
- Egg whites at room temperature give more volume.
- Roll directly after baking or cooling for flexibility.
- For cutting: use a sharp knife and rinse in hot water between cuts.
- Prepare the crystallized leaves a day in advance.