Layered Chocolate Hazelnut Meringue Gateau

My mum asked me to make a chocolate-based pudding to serve alongside the traditional boozy-fruity-pyrotechnic Christmas fare. I spent a good while researching recipes and just couldn’t find anything that appealed to me, so I set about dreaming something up. This is very much a work in progress, so I’m predominantly blogging it so that I’ve got notes for when I embark on the second attempt. I was concerned it might be horribly rich but actually it was light and delicious. If I weren’t in polite company (well, my family, so relatively polite) I could’ve put away a heart-stopping quantity of it…

I used a 10″ tin. I might try a 9″ next time, which would obviously make it slightly taller.

Layer 1: chocolate sponge base
I made a 1 egg version of the sponge from the chocolate and raspberry cake I did in October (which also gave me eight bonus cupcakes as I wanted a very slim cake base):
25g dark chocolate
115ml hot brewed coffee
150g caster sugar (reduced from original to avoid sickliness)
100g plain flour
40g cocoa powder
¼ tsp baking powder
¾ tsp bicarbonate of soda
Pinch salt
1 large egg
55ml sunflower oil
110ml buttermilk / plain yoghurt
Spot vanilla extract

Method as in the other recipe. When the sponge is cooled, remove the baking paper, wash the tin then line its sides with acetate and drop the sponge back in.

Layer 2: chocolate mousse
170g dark chocolate
80ml whole milk
1 large egg yolk
4 large egg whites
2 tbsp caster sugar

Melt the chocolate in a bain-marie (in a large bowl) then leave it on the counter to cool a little. Bring the milk to the boil and pour over the chocolate, then blend using a small whisk. Add the egg yolk and gently work into the chocolate. Whisk the egg whites to soft peaks, then increase the speed and add the sugar gradually. Continue whisking to stiff peaks. Add a third of the egg whites to the chocolate and beat to lighten. Carefully but thoroughly fold in the rest of the whites, then pour the mousse mixture into the tin on top of the sponge and refrigerate at least 4 hours.

Layers 3 and 5: hazelnut meringue
40g toasted hazelnuts, finely chopped in a blender
2 large egg whites
120g caster sugar

Preheat to 140C. Draw around the tin onto two sheets of baking paper, which will then line two baking sheets. Whisk the egg whites to soft peaks, then add the sugar one tablespoon at a time, whisking the whole time, until you get a firm glossy meringue. Gently fold in the hazelnuts. Spread the meringue mixture onto the baking sheets as flat as you can, to about 1cm from the edge of the circles you drew on the baking paper. Bake for about 90 minutes (you want crispy meringue) then switch off the oven and leave the meringues inside overnight to cool completely and dry out. Place one meringue on top of the chocolate mousse and keep the other aside.

Layer 4: Chantilly cream (ish)
300ml double cream
1tsp vanilla extract
(Chantilly cream usually contains sugar too, hence the “ish”. I didn’t want this too sweet.)

Whisk the cream to soft peaks, then add the vanilla and continue whisking to firm peaks. Spread on top of the first meringue, reserving a big spoonful. Place the second meringue on the top, then top with the reserved cream and make the surface as flat as possible. Place in the freezer for about 15-20 minutes to allow the top surface to become firm enough to stay put when you spread the ganache.

Layer 6: chocolate ganache
105g dark chocolate, finely chopped
150ml double cream
1tbsp Golden Syrup
35g unsalted butter

Over a low-medium heat, slowly bring the double cream and Golden Syrup to a boil. Pour over the chocolate and stir VERY SLOWLY in concentric circles starting in the middle. When it has emulsified, throw in the butter a few cubes at a time and continue stirring gently until it’s all in and melted. Take the gateau out of the freezer and spread the ganache over the top. Refrigerate until ready to serve. [Note to self: try a more fluid ganache next time so it doesn’t set so firm?]

I finished this one with some salted caramel I happened to have left over, which I attempted to fashion into a snowflake-type motif with some gold edible glitter. Annoyingly, the ganache was too firm to recover from the skewer I dragged over it – I should’ve done this before refrigerating.

Layered Chocolate Hazelnut Gateau

Layered Chocolate Hazelnut Gateau