In a small saucepan over medium low heat, whisk together the milk and vanilla until mixture begins to simmer. Remove from heat.
In a separate large bowl, use an electric mixer to beat together the eggs, yolks, sugar, nutmeg and salt for 5 minutes. The mixture will thicken and become slightly frothy.
Slowly pour the egg mixture into the saucepan with the vanilla and milk, whisking constantly to incorporate.
Return pan to medium low heat and whisk constantly for about 5 minutes, or until temperature reaches 165 degrees.
Remove from heat and pour in the heavy cream. Stir until well combined. If desired, you can pour the mixture through a strainer to ensure there are no lumps.
Refrigerate at least 3 hours or overnight before serving.