180ml (3/4 cup) double cream
180ml (3/4 cup) milk
1 tablespoon dark rum
3 egg yolks
45g (1/4 cup) dark brown sugar
250g pkt Arnott's Granita biscuits
100g unsalted butter, melted
80ml (1/3 cup) water
2 tablespoons caster sugar
2 teaspoons liquid glucose
1 mango, cheeks removed, peeled
Peeled mango, extra, to serve
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Place cream, milk and chocolate syrup in a saucepan over medium heat. Bring just to a simmer. Set aside for five minutes to cool.
Meanwhile, whisk egg yolks and brown sugar until pale and creamy. Slowly whisk in the cream mixture. Pour mixture into a clean saucepan. Return to low heat. Use a wooden spoon to stir until the mixture coats the back of the spoon. Pour custard into a jug. Cool to room temperature, stirring occasionally. Cover and place in the fridge for 4 hours or overnight to chill.
Meanwhile, process biscuits in a food processor until finely crushed. Add butter and process until well combined. Press evenly into the base and sides of a 2.5cm-deep, 11 x 34cm (base measurement) fluted tart tin with a removable base. Cover and place in the fridge for 30 minutes to chill.
Preheat oven to 180°C/160°C fan forced. Bake base for 20 minutes or until light golden. Set aside to cool.
Combine water, caster sugar and liquid glucose in a small saucepan over medium heat. Stir to dissolve the sugar. Simmer for 2 minutes to reduce slightly. Set aside to cool.
Process the mango in a food processor until smooth. Add the sugar mixture. Process to combine.
Churn the custard in an ice-cream maker following manufacturer’s instructions. Spoon into the cooled base. Top with the mango puree and swirl to combine. Place in the freezer to firm. Cut into pieces and top with mango slices.