Bringing a cheesecake to a party seems like cheating: pretty much everyone will love it. Forgive the fashion metaphor: after five years I finally caved and bought a black leather jacket, to match everyone else in Paris. And you know what? It makes everything else I wear instantly cooler. I have never looked cool before. Cute or quirky or colourful maybe. There is a reason that the French word for a leather jacket is un perfecto.
It feels like cheating because it is the same, simple recipe I have used forever, from the wife of my Italian tutor. Blend biscuit crumbs, whisk filling, pour into a tin, bake. Ice if you are fancy. I just adapt it to every occasion – with lemon zest and a poppy seed crust; kumquats and apricots; or Earl Grey tea – but keep the basic ratio the same. My trick is to bake it in a long loaf tin, which makes it less likely to crack or leak, and elegant and easy to slice later on. You can have the whole thing in the oven in about ten minutes. Leaving you lots of spare time to watch the Great British Bake Off and marvel at how complicated they make things for themselves.
Last time I tried another recipe, an involved one with several layers, a frozen ganache, extra bells and whistles, I was disappointed. My oven ended up covered in butter and chocolate. So I have gone back to my staple recipe. (It was high time I drew a new picture for cheesecake anyway.) Not too sweet, not too heavy. This version has a biscuit base of speculoos (cinnamon) biscuits as well as savoury crackers, and some ground coffee and walnuts for a grown-up edge. (Since I had some grapefruit marmalade lying around, I spread a little over the base too.) The mascarpone cream is flavoured with more coffee and rum, as well as a touch of grapefruit zest. On top, a bitter caramel white chocolate ganache and a few flakes of sea salt. No more decoration needed.
Coffee cheesecake with a walnut crust and salted caramel ganache
Ganache topping borrowed from Dana Cree’s not nutter butters. Feel free to substitute cream cheese or Quark for mascarpone; change the biscuits; swap the walnuts for any other nuts/seeds; change the coffee flavouring to cinnamon, lemon or tea… For a lighter topping, just smooth over some crème fraîche or sour cream when cool. Use this recipe as a template for your favourite flavours!
makes enough for at least 8 generous slices
120g speculoos biscuits
55g TUC crackers
1 tbs ground coffee
25g caster sugar
75g butter, melted
(optional: 2-3 tbs grapefruit marmalade)
2 tsp instant coffee
1 tbs rum
150g caster sugar
zest of one grapefruit
50g caster sugar
75g whipping/heavy/single cream
150g white chocolate
flaky sea salt to finish
Grease and line a 24cm-long loaf tin with baking paper, with an extra few centimetres sticking up to make it easy to pull out of the tin later on.
Preheat oven to 170C.
Blend the biscuits, coffee and walnuts in a food processor to make fine crumbs. Add sugar and melted butter and blend again to combine evenly. Press the mixture into the bottom of the loaf tin firmly with the back of a spoon. Optional: carefully spread grapefruit marmalade over the crumb base.
Rinse out the food processor then blend instant coffee with rum to dissolve it. Mix in mascarpone, sugar, eggs and zest and blend until smooth. Pour into tin and bake for 45-50 minutes until puffed up, starting to crack slightly and a skewer inserted in the top comes out clean.
Let the cheesecake cool in the pan for at least half an hour before making ganache:
Finely chop white chocolate, put in a bowl with a sieve on top. Gently heat cream in a small pan or microwave. Measure out the butter. Heat sugar and water in a medium saucepan, without stirring, to make a very dark caramel. It should be just on the point of smoking, almost burnt, to balance out the sweetness of the white chocolate. Quickly take off the heat and slide in the butter. Let it melt before stirring it into the caramel. Add the warmed cream, stir again to combine. Strain the caramel sauce through the sieve into the white chocolate. Let it absorb the heat for 30 seconds then stir together to combine. If it starts to split or look a bit greasy, whisk in a teaspoon of hot cream or hot water and it should come back together. Carefully smooth onto the surface of the cheesecake. Refrigerate to set.
Just before serving, sprinkle some flaky salt over the cheesecake. Carefully lift out of the pan with the paper, cut into thick slices, cleaning your knife each time you cut it.