01 - In a medium saucepan, combine the heavy cream, whole milk, and half of the granulated sugar. Warm over medium heat, stirring occasionally, until the mixture begins to steam. Do not allow it to reach a boil.
02 - In a separate mixing bowl, whisk together the egg yolks, remaining sugar, and salt until the mixture turns pale yellow and becomes slightly thickened.
03 - Slowly pour the hot cream mixture into the yolk bowl in a thin stream while whisking continuously to gradually raise the temperature without scrambling the eggs.
04 - Return the combined mixture to the saucepan and cook over low heat, stirring constantly with a wooden spoon, until the custard thickens enough to coat the back of the spoon and reaches 170–175°F (77–80°C).
05 - Remove the saucepan from heat and stir in the pure vanilla extract until evenly incorporated.
06 - Pour the custard through a fine-mesh sieve into a clean bowl to remove any cooked egg bits. Allow it to cool to room temperature, then cover tightly and refrigerate for at least 4 hours or preferably overnight.
07 - Transfer the thoroughly chilled custard to an ice cream maker and churn following the manufacturer's instructions, typically 20 to 25 minutes, until the mixture is thick, creamy, and resembles soft-serve consistency.
08 - Spoon the churned ice cream into a lidded freezer-safe container, smoothing the top. Freeze for at least 2 hours until the ice cream is firm and scoopable.