I discovered this recipe in Delicious magazine (the original is here), a couple of years ago. I’m a total sucker for chocolates and chestnuts which is why I paired with Lumi to make Chocolate Chestnut Truffles. (Please note I don’t make any money from these truffles and never have.)

Anyway I made this and it has become a bit of a classic in our house and I like to make it in the run up to Christmas, when you want to give yourself over to festivities but aren’t ready for the full Christmas pudding/Christmas cake yet. Not that I ever make either – I do like them but in small doses. At Christmas in our house I make Chocolate Chestnut Rum Roulade (which I really need to add to this blog before the recipe slips away).

The original recipe calls for a very small cake tin – 16cm. I toy every time I make this with buying a special tin but feel so reckless doing this as I have so many cake tins already. However, the smallest diameter one I have is 20cm so that’s what I make it in and it’s absolutely fine. But if you want a taller, more towering cake then you may want to invest. The cooking time doesn’t seem to change, for me, in the wider tin.

You need:

60g sultanas, put them to soak in 60ml of port, sweet vermouth or whatever nice liqueur you have. I think Cointreau is nice but this year I soaked mine in Plum Liqueur forgetting, foolishly, that I had some Panettone flavoured spirit which is divine (from Selfridges). Give them a really long soak.
100g butter cut into little pieces, it can be from the fridge
300g vacuum packed chestnuts
130g crème fraîche (original recipe calls for 130ml but I just put in 130g as I measure everything into a bowl, atop the scales)
30g plain flour
half a teaspoon of cinnamon
half a teaspoon of ginger
200g of 70% chocolate, chopped into small pieces
3 eggs, separated yolk and white into separate bowls
60g caster sugar

Later, for the ganache

100g 70% chocolate, again chopped
160ml double cream

A tin of 16-20cm (see intro) lined with baking parchment, at the very least on its base, and oven preheated to 160C.

What to do:

First things first: put the sultanas to soak in the liqueur of your choice. I tend to do this in the morning of the day I want to cook, but you can also do it the night before. When you do use the sultanas you’ll need to drain them of the liqueur and if I time it right, I use the liqueur in the cranberry sauce I make (I just stir it in once the cranberries are done, but you could also do it before they cook). If this doesn’t work for you you could whip some cream up with the left over liqueur, to serve with this cake.

In a food processor, blitz together the crème fraîche and the chestnuts.

In a separate bowl mix together the flour, spices and a pinch of salt.

Now you want to melt the chocolate and butter together over a saucepan of simmering water. Make sure the bowl doesn’t touch the water, and you want to take it off before all the chocolate is melted – just carry on stirring – or the chocolate may seize up. I do this part – the chocolate and butter melting – on a fairly large bain marie and I end up using the top part of the bain marie to mix everything together when the time comes. But otherwise, don’t worry: just get a big bowl and decant your chestnut and crème fraîche from the blender into that and this will be your bowl where everything, eventually, meets.

Once the chocolate has melted, put it aside to cool for a bit – about ten minutes. Then mix it into the chestnut and crème fraîche mixture; one at a time stir the egg yolks into this mixture, until everything is fully mixed and then add the flour/spice/salt mixture.

Whisk together the egg whites until stiff, then take a little of the beaten egg whites and mix it into your cake mixture to loosen it. Then taking a large-ish metal spoon as it makes it easier, gently fold the egg whites into the cake mixture. Don’t forget the sultanas, if you haven’t drained them do so now and add them into the cake mixture. It will be a fairly thick mixture, level it out and bake it for 30-35 mins. I admit mine took a bit longer, more like 40mins but the numbers have worn out on my oven dial so it’s possible it was too low. It’s done when a few crumbs of mixture are still clinging to a testing skewer.

Leave to cool for ten minutes in the tin, then turn out. The bottom of the cake will become the top of the cake. You can easily do this bit the day before but, day before or not make sure the cake is thoroughly cooled before you ice it.

To ice the cake, put the chocolate and cream in a bowl again on top of a pan of simmering water. Again: do not let the bowl touch the water underneath. Stir until the chocolate is nearly all, but not quite, melted then take off the heat and keep stirring.

Let the ganache cool for about ten minutes then slather on the cake using a spatula. You can then adorn it quite opulently if you like or leave it plain. It is quite a plain looking cake but there’s no shame in that. The original suggests things like sugared almonds, marron glacés, sugar sprinkles…you get the idea. In the photo here I used caramelised white chocolate and praline covered pistachios which are beautifully green on the outside. I got them from Melt and I loved the colour contrast (not to mention the festive green). They are insanely expensive so I’m only giving you this as an idea, not suggesting you spend all that money on buying a cake topping decoration.

Store in the fridge but bring out for about half an hour to chambré before serving. Truly delicious. And rich.