Method

• 1.
  Place the egg yolks and sugar in a large mixing bowl and beat with electric hand beater until thick and pale. Place the milk in a saucepan, scrape the seeds from the vanilla bean and add to the milk with the pod, then heat over medium heat until scalding point. Remove from heat and set aside to infuse for 10 minutes. Discard pod and reheat milk to scalding point, then strain over the egg mixture and beat until just combined. Return the mixture to a clean saucepan and place over low heat. Cook, stirring constantly, until the custard thickens enough to coat the back of a wooden spoon - don't allow it to boil (this can take up to 20 minutes).
• 2.
  Pour the custard into a bowl and sit over a bowl of ice, stirring until cool. Cover the surface of the custard with plastic wrap to prevent a skin from forming and place in the fridge to chill completely. Whisk the cream into the cold custard until well combined, then pour into a shallow plastic container, cover and freeze until frozen at the edges (this can take up to 1 1/2-2 hours).
• 3.
  Remove the ice-cream from the freezer, beat with electric hand beater until smooth, then return to the freezer. Repeat this step 2 or 3 more times (beating the ice-cream prevents the formation of ice crystals). Alternatively, churn the mixture in an ice-cream machine to manufacturer's instructions.