Dark chocolate fondant with chestnut and squash

First make the chestnut ice cream. Boil the milk, cream and chestnut purée in a pan with 85g of the sugar, making sure that the sugar dissolves

Whisk together egg yolks and the rest of the sugar. Temper the eggs with the cream. This is done by gradually pouring the warmed cream mixture into the eggs. Return to the pan and gently heat until the mixture thickens and coats the back of a spoon, seasoning with salt and lemon juice if necessary

Pass the custard through a sieve, check the seasoning and freeze (you can also use an ice cream maker - in which case, churn straight-away). Once frozen, churn in a Pacojet and store in the freezer until ready to serve

For the purée, peel the squash, remove the seeds and chop into small pieces. Add the squash pieces to a vac pac bag along with the syrup and vanilla. Seal and cook at 85°C for 1 hour

Remove the squash from the bag and blend until smooth. Set aside until needed

Preheat the oven to 175°C/gas mark 4

To make the pumpkin granola, toast the oats in a pan until golden brown. Roast the pumpkin seeds, poppy seeds, mixed spice and sesame seeds in the oven for 5 minutes

Warm the liquid glucose, honey and pumpkin seed oil in a pan and puff the rice in a hot fryer

Drain the puffed rice on some kitchen paper. When the glucose mixture starts to bubble, remove from the heat and add the roasted seeds, puffed rice and oats to the pan. Season with the salt, mix well and spread onto a lined baking tray. Allow to cool before crumbling into pieces

Preheat the oven to 180°C/gas mark 4

For the fondant, gently melt the chocolate and butter together in a bain marie. Then, whisk the egg yolks, whole eggs and sugar together until tripled in volume

Slowly fold the melted chocolate into the eggs and sugar, followed by the flour. Transfer the fondant mix into piping bags and grease the rings. Pipe 60g of the fondant mixture into each ring. Bake in the oven for 5 minutes - the centres should still be runny

To plate, arrange the chocolate fondants onto plates and lightly dust with icing sugar. Add a quenelle of the squash purée and chestnut ice cream alongside and scatter around some pumpkin granola. Top the ice cream with a few slices of shaved chestnut and drizzle some pumpkin oil onto the plate before serving