Rhubarb panna cotta with roasted rhubarb

Fruit and vegetables

500g/1lb 2oz rhubarb, cut into 3cm/1Â¼in pieces

Cooking ingredients

2 tbsp caster sugar

75g/2Â½oz caster sugar

2 leaves gelatine, soaked in a bowl of water until soft, squeezed dry

Dairy, eggs and chilled

300ml/11fl oz buttermilk

150ml/5fl oz double cream

Other

4 tbsp apple juice

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