200g white chocolate, plus extra to decorate (optional)

300ml double cream

2 large eggs, whites only

125g raspberries

125g blueberries

125g blackberries

125g (plus 75g) strawberries 

250g sponge fingers biscuits

50ml milk

To decorate: 

50g strawberry jam

1 x vanilla pod, halved lengthways

Charlotte or large jelly dish