This Italian-style flourless chocolate cake has a crisp crust, a wonderful rich dark chocolate flavour and a light, moist, melt-in-the mouth centre. I prefer my cakes not too sweet so I reduced the sugar in this recipe which comes from one of my favourite cake books, Bake your cake & eat it too! by Tamara Millstein.

Preheat your oven to 180ºC (350ºF) and prepare a 22cm (8″) springform tin by greasing and lining the bottom with baking paper. In a heat-proof bowl over a bain marie, melt 350g (12⅓ oz) of good quality chocolate pieces and 100g (3½ oz) of chopped butter until smooth and glossy. Whisk in 3 tablespoons of dutch cocoa powder plus 1 tablespoon of instant coffee and set aside. In another bowl beat 5 large eggs with 220g (7¾ oz) of caster sugar until thick and pale. Add 5 tablespoons of ground walnuts and 100g (3½ oz)…