Chocolate, orange, and cream: Some combinations are just classic. So much so that not even our playful additions—hazelnuts, coriander, cardamom, salt—make a dent in this idyllic combination. For a quick and fun alternative to the spicy hazelnuts, a line of popping candy can be used instead. It’s a delight to watch people’s faces as they are taken by the surprise of little balls exploding in their mouths. You’ll need to start a day ahead for the chocolate to set in the fridge—you’ll have a little of the chocolate pudding left over, which can be saved as a snack to have with coffee or served warm with some ice cream.
Preheat the oven to 375°F/190°C (340°F/170°C convection).
Place 9 oz. dark chocolate (70 percent cocoa solids, broken into 3/4-in. pieces) and 2/3 cup unsalted butter (cut into a 3/4-in. dice, plus extra for greasing the dish) for the ganache in a heatproof bowl and place over a saucepan half full of simmering water; take care that the water is not touching the bottom of the bowl. Keep on the heat for about 5 minutes, stirring and folding the mixture every now and then, until the chocolate is melted and shiny. Remove from the heat and set aside until completely cool.
Place 1 large egg, 3 egg yolks, and 5 T superfine sugar in a stand mixer bowl and whisk for 5–6 minutes, until thick, light, and foamy. In stages, carefully fold the egg into the chocolate by hand, taking care not to overwork the mixture, then transfer to a lightly greased and parchment-lined 8 1/2 x 3 in. loaf pan. Place in the oven and bake for about 10 minutes, until the surface is opaque but the middle has a slight wobble. Remove from the oven and set aside to cool. Cover and refrigerate until set, preferably overnight. You don’t want it to be too firm when serving, so remove it from the fridge 2 hours ahead of time.
To make the spice mix, place 1 tsp. coriander seeds, 3/4 tsp. black peppercorns, 1 small cinnamon stick, 1 whole star anise, and 8 cardamom pods in a frying pan and toast for 2–3 minutes, until fragrant. Transfer to a spice grinder or a mortar and pestle and grind until completely fine. Transfer to a medium bowl, mix in 3/4 tsp. superfine sugar and 1 1/2 oz. hazelnuts and set aside.
Mix together 10 1/2 oz. crème fraîche and 2 1/2 tsp. sifted confectioners’ sugar and keep in the fridge until ready to use.
To make the orange oil, mix together the finely grated zest of half an orange and 1 T olive oil and set aside.
To serve, arrange the hazelnut spice mix in a straight line down the middle of 8 plates. Scoop a tablespoon-size portion of chocolate onto each plate (dipping the spoon in hot water will help keep things neat) and place on an angle across the nuts. Place a spoonful of crème fraîche next to the chocolate and drizzle the orange oil on top. Finish with a tiny pinch of coarse sea salt and serve at once.