Infuse the Milk: In a saucepan over medium heat, combine whole milk, heavy cream, and sugar. Heat until warm but not boiling. Add fresh mint leaves, remove from heat, and let steep for 30 minutes.
Prepare the Custard: In a separate bowl, whisk egg yolks. Slowly pour the warm mint-infused milk mixture into the yolks, whisking constantly to temper the eggs.
Cook to Perfection: Return the mixture to the saucepan and heat over low, stirring constantly, until it thickens and coats the back of a spoon (about 170°F/77°C).
Strain & Chill: Remove from heat and strain out the mint leaves. Stir in salt and let the mixture cool to room temperature before refrigerating for at least 4 hours.
Churn & Freeze: Pour the chilled mixture into an ice cream maker and churn according to the manufacturer’s instructions. Transfer to a container and freeze for at least 4 hours or until set.
Serve & Enjoy: Scoop into bowls or cones and enjoy as is, or pair with chocolate shavings, fresh berries, or a drizzle of honey.