01 - In a saucepan, combine the 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. This gradual addition tempers the yolks and prevents them from scrambling.
04 - Pour the tempered yolk mixture back into the saucepan. Stir continuously over medium-low heat until the custard thickens slightly and coats the back of a spoon, reaching 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. Cool to room temperature, then cover and refrigerate for at least 4 hours.
07 - Once the custard is thoroughly chilled, pour it into an ice cream maker and churn according to the manufacturer's instructions until thick and creamy.
08 - Transfer the churned mixture to a freezer-safe container, cover, and freeze for at least 2 hours before serving to firm up the texture.