White chocolate and pistachio pannacottas

Method

1. Put the cream and sugar in a pan over a medium heat. As soon as bubbles appear, turn the heat down to very low and cook for 12 minutes.
2. Meanwhile, soak the gelatine in a bowl of cold water for 5 minutes.
3. Add the chocolate to the hot cream and stir until smooth. Lift the gelatine out of the water (no need to squeeze it) and stir into the hot mixture to dissolve. Remove from the heat.
4. Grind the pistachios finely in a mini processor or coffee grinder. Add to the cream mixture and allow to infuse for 15 minutes. Pass through a sieve into a jug, then divide between 4 x 150ml dariole moulds or ramekins. Chill for 2 hours, until set.
5. To turn out, dip the bases of the moulds very briefly in hot water, then invert onto serving plates. Decorate with the chocolate thins and a few crystallised rose petals (see video in tips).