Rice kheer with chocolate and mandarin

75g of basmati rice

5 tbsp of granulated sugar

2 tbsp of whole hazelnuts

50g of 65% dark chocolate, chopped

1 tbsp of cocoa powder

825ml of full-fat milk

100ml of single cream

3 1/2 Mandarin oranges, juiced

1 mandarin, flesh cut into small segments

1/2 tsp ground cardamom