Pour 1 cup of cream into a saucepan and add the sugar, salt, and vanilla seeds if using a vanilla bean. Heat until the sugar dissolves.

Remove from heat and stir in remaining cream, milk, and vanilla extract. Chill the mixture thoroughly in the refrigerator.

Pour the chilled mixture into an ice cream maker and churn according to the manufacturer's instructions.

Serve immediately or transfer to a container and freeze until firm.