Fresh Berry Swiss Roll with White Chocolate Cream Step-by-step instructions

Before you start

Before starting, separate the eggs and let them come to room temperature. Line a 10x15-inch baking sheet with parchment paper and set it aside. Prepare the white chocolate cream if making it from scratch, and have the fruit washed, hulled, and sliced.

Preheat the oven to 350°F (175°C). Gather all ingredients and equipment, including an electric mixer, mixing bowls, and an offset spatula. Having everything ready will make the process smooth and efficient.

Instructions

Batter and Bake

1. 1Prepare the Sponge Batter
   Preheat the oven to 350°F (175°C). Line a 10x15-inch baking sheet with parchment paper. Separate the eggs, placing the whites in a large mixing bowl and the yolks in another bowl. Beat the egg whites with 1/2 cup of the sugar until stiff, glossy peaks form. In the yolk bowl, whisk the remaining 1/2 cup sugar with the hot water until pale and thick. Add the flour, cornstarch, vanilla, and baking powder to the yolks and mix until smooth.
   Look for The batter should be airy, light, and smooth with no streaks of egg white.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Fold gently with a spatula, cutting through the center and lifting from the bottom to keep the air in.
2. 2Bake the Sponge
   Pour the batter onto the prepared baking sheet and spread it evenly with an offset spatula. Bake for 10 minutes, until the sponge is lightly golden and springs back when touched. Remove from the oven and let cool in the pan for 5 minutes, then turn out onto a clean kitchen towel dusted with powdered sugar. Peel off the parchment paper and roll the sponge with the towel from a short end. Let cool completely.
   Look for The sponge is lightly golden and springy; it should not be browned.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Rolling while warm prevents cracking. Cool completely before filling.

The batter should be airy and smooth, with no streaks of egg white. After baking, the sponge is lightly golden, springy to the touch, and easily releases from the parchment. It should be rolled and cooled completely before filling.

Fill and Roll

3. 3Spread the Cream
   Once the sponge is cool, unroll it gently. Spread the white chocolate cream evenly over the surface, leaving a 1-inch border at the edges. Scatter the sliced strawberries and bananas over the cream.
   Look for The cream layer is smooth and the fruit is evenly distributed.
   Tip Do not overfill; too much cream can cause the roll to split.
4. 4Roll the Sponge
   Starting from a short end, carefully roll the sponge over the filling, using the towel to help lift and guide it. Roll tightly but gently, then place the roll seam-side down on a serving platter.
   Look for The roll holds its shape and the filling stays inside.
   Tip Use the towel to lift the sponge; it helps create a tight, even roll.

The cream is spread evenly, and the fruit is scattered over the surface. The roll is tight and even, with the seam facing down. The filling should stay in place, and the roll should hold its shape without cracking.

Chill and Finish

5. 5Chill and Decorate
   Wrap the roll in plastic wrap and refrigerate for at least 1 hour to set. Before serving, dust generously with powdered sugar. Optionally, pipe additional cream rosettes on top and garnish with fresh berries.
   Look for The roll is firm and holds its shape when sliced.
   Tip Chilling makes slicing cleaner and the flavors meld together.

After chilling, the roll is firm and holds together when sliced. The powdered sugar dusting gives a snowy finish. The slices reveal a clean spiral of sponge, cream, and fruit.

Common mistakes

One common mistake is overmixing the batter, which deflates the meringue and results in a dense, tough sponge. Fold gently and stop when no streaks of white remain.

Another issue is rolling the cake too early or too late; roll it while it's still warm but not hot, using a towel to guide.

Overfilling with cream can cause the roll to split, so keep the filling layer moderate. Finally, ensure the cake is completely cool before filling to prevent the cream from melting.

How to tell it’s done

The sponge is done when it is lightly golden on top and springs back when pressed gently with a finger. It should have a slight give but not feel raw or wet. The baking time is short, so keep an eye on it to avoid over-browning.

After baking, the sponge should be fully set and easily peel away from the parchment paper. The internal temperature of the cooked sponge should reach at least 160°F (71°C) to ensure the eggs are fully cooked.

• Egg dishes: 160°F (71°C) in the thickest part