Strawberry Pink Velvet White Chocolate Mousse Cake Step-by-step instructions

Before you start

Gather all the ingredients and equipment before you start, so the mousse can move from the bowl to the pan without delay. Place the heavy cream, the mixer bowl and the whisk attachment in the refrigerator for at least 20 minutes so the cream whips quickly and holds its shape. Sift the confectioners' sugar to avoid lumps in the mousse.

Hull and slice the strawberries and set aside a few whole and halved berries for decorating. Chill the white chocolate block for about 10 minutes so it grates cleanly. Line the base of the springform pan or set the glass ring mold on a flat plate. If your pink velvet cake layers are made ahead, make sure they are fully cooled and level before assembling, because any dome or warm spot will affect the stack.

Instructions

Build the mousse and layers

1. 1Prepare the strawberries
   Hull the strawberries with a paring knife, then slice most of them thinly on a wooden cutting board. Keep a few whole and halve the rest for decorating later. Set the slices aside.
   Look for Slices look bright red, even in size, with no hulls or green tops left behind.
   Tip Pat the berries dry before slicing so the layers stay firm and the glaze adheres well.
2. 2Grate the white chocolate
   Set aside the white chocolate. Use the box grater to shave a portion into fine shavings and curls, collecting them on the board. Keep the remaining chocolate for the mousse.
   Look for Fine shavings and soft curls gather on the board, ready for decorating.
   Tip Chill the chocolate block for 10 minutes first, so it grates cleanly instead of smearing.

At the end of this phase the white chocolate mousse should be smooth, thick and light, holding soft peaks that stand up on the whisk without slumping. The strawberry slices should be spread evenly between the cake layers, and the stack should look level from the side. The mousse should feel airy yet substantial, never runny or loose. Before you move on, check that each layer sits flat and that no strawberries are poking through the edges of the pan, since gaps there can make the slices crumble later. Gently press the top layer down so the cake is compact and ready to chill without shifting.

Chill until firm

3. 3Make the white chocolate mousse
   Melt the remaining white chocolate in a heatproof bowl over barely simmering water, stirring until smooth, then cool slightly. Whip the cold cream with the sugar and vanilla to soft peaks. Fold in the melted chocolate in two additions.
   Look for The mousse holds soft peaks and looks smooth, thick and glossy.
   Tip Make sure the melted chocolate is only warm, not hot, before folding it into the cream.
4. 4Layer the cake
   Place one pink velvet cake layer in the springform pan or ring mold. Spread a layer of white chocolate mousse, then scatter sliced strawberries over it. Repeat the layers, finishing with a cake layer on top.
   Look for Each layer sits level, with strawberries spaced evenly through the mousse.
   Tip Press the strawberry slices gently into the mousse so the layers hold together when sliced.
5. 5Chill until set
   Cover the cake and refrigerate it for at least 6 hours, or until the mousse is fully firm. Chilling is what gives the layers their clean, firm slices.
   Look for The top feels firm and the edges no longer bend when the pan is tilted.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip Chill overnight for the cleanest slices and the most stable structure.

After several hours in the refrigerator the cake should feel firm to a light touch and the edges should hold their shape when you tilt the pan slightly. The mousse should look set and matte rather than glossy, and it should not wobble when the pan is moved. This is the point where the layers become sliceable. Before glazing, confirm that the top is level and that there is no condensation pooling on the surface, because moisture can make the glaze slide or stain. If the cake still feels soft, return it to the refrigerator for another hour rather than rushing the glaze.

Glaze and decorate

6. 6Glaze the cake
   Warm the strawberry glaze until pourable, then spread or pour it over the chilled cake, smoothing the top and sides with an offset spatula. Return the cake to the refrigerator for 30 minutes to set the glaze.
   Look for The glaze is smooth, pink and glossy, with no gaps or streaks.
   Tip Let the glaze cool for a few minutes so it coats evenly without running off the sides.
7. 7Decorate and slice
   Arrange the whole and halved strawberries on top of the cake, then scatter the white chocolate shavings and curls over them. Release the pan, then slice with a long knife dipped in hot water and wiped dry between cuts.
   Look for Strawberries and white chocolate curls cover the top evenly, and the slices come out clean.
   Tip Dip the knife in hot water and wipe it dry between each cut for neat, sharp slices.

At the end of this phase the cake should be coated in a smooth, pink and glossy glaze, with clean edges and no bare patches. The strawberries and white chocolate curls should sit neatly on top, looking fresh and evenly spaced. The glaze should have set enough that it does not drip, but it should still look shiny and tender when you touch the surface lightly.

Check the sides for thin spots and fill them with a little extra glaze if needed. Once the decoration is complete, return the cake to the refrigerator until serving, so the glaze and garnish stay crisp and fresh until the moment you slice it.

Common mistakes

The most common mistake is rushing the chilling time. If the cake goes into the glaze before the mousse is firm, the glaze will smear and the slices will crumble when cut. Another frequent problem is overheating the white chocolate. Chocolate that is too hot can seize or turn grainy when folded into the cream, so melt it gently and let it cool until it is only warm.

Whipping the cream too far will make it grainy and separated, so stop as soon as soft peaks form. Finally, uneven layers or strawberries packed too close to the edges can cause the cake to lean or split, so spread each layer carefully and keep the fruit within the pan.

How to tell it’s done

This cake has no oven step, so doneness means the mousse is fully set and the cake holds its structure. Press the top gently with a fingertip: it should feel firm and spring back slightly rather than sink. The cream should have held stiff, glossy structure when whipped, and the chilled layers should cut cleanly with a warm knife without the mousse squeezing out.

The strawberry slices should stay in place between the layers and the glaze should look smooth and set. Since the mousse contains eggs in the cake layers, keep it refrigerated at all times until serving, and do not leave it at room temperature for more than two hours.

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