Creamy chicken & pumpkin

Prepare this delicious chicken and pumpkin dish the day before and just pop in the oven as your guests arrive.

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20g pack dried porcini

1 free-range chicken, about 1.5kg/3lb 5oz, jointed into 8 pieces (ask your butcher to do this for you)

1 lemon, halved

2tbsp olive oil

25g unsalted butter

1 small onion, finely chopped

300g/10oz pumpkin peeled, seeded and cut into 2cm cubes

200g chestnut mushrooms, roughly chopped

284ml carton double cream