[Ingredients]
4 egg yolks
6tbsp caster sugar
1tsp cornstarch
300ml semi skimmed milk
250g chopped white chocolate
2tsp vanilla essence
300ml whipping cream
[Steps]
Whisk yolks, sugar and cornstarch in a bowl until thick and foamy.
Pour milk into a saucepan and bring to boil. Gradually pour into egg mixture, whisking constantly.
Return mixture to pan and cook over low heat, stirring constantly until it thickens (this is custard) and is smooth.
Pour custard back to bowl. Break 150g chocolate into pieces and stir into hot custard with vanilla extract. Leave to cool then chill.
Whip cream until just thickened but still falls off from a spoon. Fold cream into custard and pour into a container.
Freeze for 4hrs until thickened. Beat once using a fork, electric mixer or food processor.
Beat ice cream again then stir in remaining chocolate. Freeze again for 2hrs.