• 250g fresh strawberries, hulled, thinly sliced, plus extra, to serve
• 85g pkt Jelly Natural Strawberry Flavoured Jelly crystals
• 250ml (1 cup) boiling water
• 250ml (1 cup) cold water
• 540g un-iced white chocolate mud cake, halved horizontally
• Whipped cream, to serve
• 50g (1/3 cup) custard powder
• 55g (1/4 cup) caster sugar
• 830ml (3 1/3 cups) milk