Easter chocolate mousse cake

Easter chocolate mousse cake

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  • Preparation and cooking time
    • Prep:
    • Cook:
    • plus 2 1/2 hours chilling
  • A challenge
  • Serves 8

A true chocolate showstopper for any Easter table. This gorgeous centrepiece has a flourless chocolate sponge base topped with rich chocolate mousse and a spun sugar nest

  • Freezable (sponge only)
Nutrition: per serving
NutrientUnit
kcal567
fat30g
saturates17g
carbs63g
sugars54g
fibre5g
protein9g
salt0.3g
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Ingredients

For the flourless sponge

For the chocolate mousse

For the chocolate croustillant

For the chocolate collar

For the lemon butterscotch sauce

Optional decorations

  • white chocolate feathers and spun sugar nest, and a decorative egg (I use a blown sugar egg, but you could use a shop-bought chocolate egg, if you like)

You will need

  • 18cm cake or pastry ring (4.5cm high, available from amazon.co.uk)
  • acetate roll (6cm wide x 40cm long, available from amazon.co.uk)
  • food thermometer or temperature probe
  • large and small palette knives

Method

  • STEP 1

    Heat oven to 180C/160C fan/ gas 4. Line a baking sheet with baking parchment and sit the cake ring on top. Put the egg yolks in a large bowl. Whisk the egg whites with the sugar in a separate bowl, or a mixer, until stiff peaks form.

  • STEP 2

    Once stiff, use a large metal spoon to stir one-quarter of the whites into the yolks, then pour the mixture back into the remaining egg whites, and gently fold to combine. Sieve in the cocoa powder and gently fold again until just combined.

  • STEP 3

    Pour into the cake ring and level out with a spatula or spoon. Bake for 15-20 mins or until a skewer inserted into the centre comes out clean. Leave to cool in the ring – the middle will sink.

  • STEP 4

    Once the cake has cooled, slide a knife around the inside of the ring to release the cake and lift the ring off. Trim the edge of the cake with scissors. Clean the ring and place it back around the sponge on a cake board, or on a cake stand.

  • STEP 5

    Boil the kettle. In a large clean bowl, or a freestanding mixer, whisk the egg whites and sugar until medium peaks form.

  • STEP 6

    Set a bowl over a pan of gently simmering water and melt the chocolate to around 50C. In a separate bowl, whisk 50ml hot water with the cocoa powder, then add the yolks. Tip onto the melted chocolate, but don’t stir it in yet.

  • STEP 7

    Briskly whisk one-quarter of the egg whites into the melted chocolate and egg yolk mixture – this ensures that the mousse has an even texture. Use a spatula to fold in the remaining egg whites until fully combined.

  • STEP 8

    Pour the mousse onto the sponge, then chill for at least 2 hrs or up to 24 hrs. Meanwhile, make the chocolate croustillant, white chocolate feathers and spun sugar nest, if using (see opposite).

  • STEP 9

    Melt half the chocolate in a bowl over gently simmering water. Once melted, stir in the remaining chocolate, then remove from the heat. Leave to cool for 5 mins. Using a palette knife, spread the chocolate across the acetate band in a thin, even layer to cover. Leave to set for 1-2 mins.

  • STEP 10

    Lift off the cake ring, then wrap the acetate around the cake so that the chocolate touches the mousse. Stick it tightly and hold for a second to make sure it stays in place – don’t worry if it overlaps a little. Chill for 30 mins. Meanwhile, make the butterscotch sauce (see opposite).

  • STEP 11

    To assemble the cake, remove from the fridge and peel off the acetate carefully, breaking off any overlapping chocolate.

  • STEP 12

    Spoon half the lemon butterscotch sauce over the mousse, then top with the spun sugar nest and chocolate feathers, if using. Add the shards of broken chocolate croustillant and a decorative egg, if you like. Serve within 1 hr with the remaining sauce on the side.

  • STEP 13

    Melt 50g chopped white chocolate in a bowl over a pan of gently simmering water. Use a small palette knife to spread a thin layer of the chocolate on a piece of baking parchment in a feather shape. You can set the parchment on the inside of an upturned cake tin to set the chocolate feather in a curved shape, if you like. Once set, peel off the parchment and use a small knife to notch the edges to give them a feathery effect.

  • STEP 14

    Fill the sink with cold water and cover an area of your work surface (about 1m x 50cm) with baking parchment or cling film. 
    Put 150g fondant icing and 20g liquid glucose in a saucepan over a medium heat. Cook until the fondant melts, then increase the heat and bubble until it turns to a deep caramel. Quickly cool down the pan by dipping the base in the cold water in the sink, but make sure no water splashes into the pan. This should stop the sugar from cooking and thicken the caramel slightly. Using 2 forks, pull strands of caramel from the pan, and flick them quickly from a height over your covered work surface to create multiple thin sugar threads. Keep going until you have a large mass – enough to make a nest. If the caramel starts to set, put it back on the heat to soften it a little. Use your hands to shape the sugar threads gently into a loose cylinder, then wrap into a nest shape. Will keep for a couple of days in a cool, dry container. If it comes into contact with any moisture or heat, it will dissolve.

  • STEP 15

    Heat oven to 180C/160C/gas 4. Mix the sugar and cocoa in a bowl. In a small saucepan, gently melt the butter with the chocolate and glucose over a gentle heat. Once melted, whisk in the sugar and cocoa powder mixture and 50ml cold water. Bring to the boil and cook for 30 secs-1 min until slightly thickened.

  • STEP 16

    Spread a third of the mixture onto a piece of baking parchment on a baking sheet. Lay another piece of parchment on top and, using a rolling pin, roll out the croustillant as thin as possible. Set in the freezer for 5 mins until the top sheet of parchment peels off easily. Repeat with the rest of the mixture, or freeze for another day.

  • STEP 17

    Peel off the top layer of parchment and bake in the centre of the oven for 5 mins. When it is bubbling, it’s cooked. Cool completely before breaking into large pieces.

  • STEP 18

    In a saucepan, combine the sugar, liquid glucose and 1 tbsp water. Set over a gentle heat until the sugar dissolves, but do not stir. Once dissolved, bring to the boil and cook until the sugar syrup turns into a caramel and is lightly golden. Warm the lemon zest and juice in the microwave on High for 1 min, then heat the whipping cream in a separate bowl in the microwave on High for 2 mins. Once the caramel is golden, pour in the lemon and cream. Boil for 30 secs, then set aside to cool. Chill in the fridge, covered with cling film, until needed

Recipe from Good Food magazine, March 2016

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