GBBO Cake Week Challenge 1: Black Forest Gateau

The first showstopper challenge of The Great British Bake Off 2015 is a reinvention of the classic retro dessert, the Black Forest Gateau. Now let me just say that I don’t have the kitchen capacity to make tempered chocolate decorations or fancy caramel buildings so my creation is nowhere near as good as the ones that the bakers make on the show but I’m sure it tastes just as good.

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Whilst the version from the freezers of supermarkets is fine, I think this tops them all with layers of speckled chocolate cake brushed with a cherry glaze and covered with sweetened cream. I found this great sour cherry conserve which has chunks of sour cherry inside. I apply this liberally on the sponge and on the cream as it is the only source of cherry flavour. Feel free to change this up by making cherry compote or a cherry syrup instead. Kirsch, a cherry liqueur, can also be used if you are the kind of person who uses alcohol in their baking.

Talking of changing things up, why not try making a chocolate Kirsch ganache to fill the centre, topping the cake with chocolate coated cherries, or making caramel decorations or use modelling chocolate to shape trees. This reinvention challenge is really up to you!

If you want to put cherries in each layer, I suggest using frozen cherries, which are readily available, and cooking them down with some water, sugar, lemon juice, lemon zest and cherry conserve until it is thick, sticky and the cherries are soft. Drain the syrup away and paint the sponges using this instead. Fresh cherries, whilst very tasty and juicy, are very expensive and for a cake this size, you’d struggle to find enough cherries.


150g dark chocolate, melted

1 tbsp instant coffee granules

1 tbsp milk

6 eggs

175g granulated sugar

1 tsp vanilla extract

180g self-raising flour

450g high quality sour cherry conserve

600ml double cream

100g granulated sugar

100g dark chocolate


Preheat the oven to 190°C. Line the base of 2 20cm deep loose bottomed round tins with baking parchment and set aside.

Melt the chocolate in the microwave on 30 second blasts, stirring after each blast, reducing the time to 20 seconds once it starts to melt. Add the milk and coffee, stir to combine and set aside to cool briefly.

Whisk the 6 eggs with the sugar until it is thick, mousse-like and when you draw a figure of eight with the whisk, it is visible before sinking back slowly. Add the cooled chocolate, the vanilla extract and sift in the self-raising flour, and working quickly, fold through until everything is combined. If the chocolate is not mixing through, using just 1 whisk in the electric whisk, whisk until the sponge is even.

Divide the sponge mix between the 2 tins and bake for 20 minutes until a skewer inserted comes out clean. Allow to cool in the tins for 10 minutes before removing and cooling completely on a wire rack. Once cooled, use a serrated knife to divide the sponges in half, cutting off any peaks so that each top half lays flat.

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Mix 4 tablespoons of the cherry conserve with some boiling water until it is loose. Paint each exposed side of the sponge with the conserve and place one bottom half on your serving plate or cake stand.

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Whip the double cream with the sugar until it forms thick but soft peaks. It should hold its shape but be easily spread with a spoon.

Spread another 3 tablespoons of the conserve on the sponge and then top with some of the whipped cream. Carefully spoon some more of the cherry conserve on, making sure it is spread evenly. Sandwich another layer on top, repeating this layering process, finishing on a top half of sponge and around half of the cream left.

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Transfer some of the cream into a piping bag fitted with a large star nozzle. Spread the top with some cream and then spread the rest around the side. Finish by piping 8 large peaks of the cream on the top with one in the centre. Carefully dot some of the conserve on each peak and create a ring of 8 dots between the cream on the top.

Scrape the back of a knife against the bar of chocolate to create chocolate sprinkles and dust over the cake. Keep in the fridge and it is best eaten the day after.

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If you are also baking along with GBBO, please let me know and share what you did with the Black Forest Gateau down below. Like I say this is nothing on what the bakers did on the show but this is a revamped version of the classic. I call what the bakers are doing on the show reinvented.

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6 thoughts on “GBBO Cake Week Challenge 1: Black Forest Gateau

  1. Pingback: Bake Off Series 7: Cake Week Challenges Revealed | Andrew in the Kitchen

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