01 - In a saucepan, combine heavy cream, whole milk, granulated sugar, and salt. Heat over medium, stirring occasionally, until the mixture is hot and the sugar is fully dissolved. Do not allow it to boil.
02 - In a separate mixing bowl, lightly whisk the egg yolks until smooth.
03 - Slowly pour about 1 cup of the hot cream mixture into the yolks while whisking constantly to temper and prevent scrambling.
04 - Pour the tempered yolk mixture back into the saucepan, stirring continuously. Cook over medium-low heat until the custard thickens slightly and coats the back of a spoon, reaching an internal temperature of 170–175°F (76–80°C).
05 - Remove the saucepan from heat and stir in the pure vanilla extract until evenly incorporated.
06 - Strain 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 and refrigerate for at least 4 hours or overnight.
07 - Once thoroughly chilled, pour the custard into an ice cream maker and churn according to the manufacturer's instructions until thick and creamy.
08 - Transfer the churned ice cream to a freezer-safe container, cover tightly, and freeze for at least 2 hours before serving to achieve the desired firmness.