White chocolate panna cotta with stewed rhubarb

Soak the gelatine in a bowl of ice-cold water for 10 minutes until very soft. Meanwhile, put the cream, milk, sugar, vanilla pod and seeds into a pan along with a pinch of salt, and bring to a gentle simmer.

Once simmering, take off the heat (remove the vanilla pod, if using), add the chocolate, then stir to melt. Drain the gelatine in a fine sieve, then squeeze out as much water as possible. Add the gelatine to the cream mixture and mix really well. Pour the mixture through a fine sieve into a jug. Leave for 5-10 minutes until thickened slightly, then mix really well and divide evenly between six pudding basins or moulds. Cover and chill for at least 6 hours but preferably overnight.

For the stewed rhubarb, put the rhubarb, sugar and lemon juice into a pan and simmer gently, stirring occasionally until the rhubarb has released some juice and is very tender but not collapsing. This can be made ahead and then chilled.

To serve, carefully dip the bases of the moulds in hot water for 3-4 seconds to loosen the panna cottas, then invert onto plates. Reheat the rhubarb until just warm, then spoon around the panna cottas to serve.