Preheat Oven
Preheat your oven to 325°F (160°C).
Prepare a water bath by placing a large roasting pan in the oven and filling it halfway with hot water.
Heat the Milk
In a small saucepan, gently heat the milk over medium heat until warm but not boiling. Remove from heat and set aside.
Prepare the Custard Mixture
In a medium bowl, whisk together the eggs, sugar, vanilla extract, and salt until well combined.
Slowly pour the warm milk into the egg mixture, whisking constantly to prevent curdling.
Strain and Pour
For an extra-smooth custard, strain the mixture through a fine-mesh sieve into your baking dish.
Pour the custard mixture into an 8x8-inch baking dish or individual ramekins.
Add Nutmeg
Lightly sprinkle ground nutmeg on top of the custard.
Bake
Carefully place the baking dish or ramekins into the prepared water bath in the oven.
Bake for 45-55 minutes, or until the custard is set but still slightly jiggly in the center.
Cool and Serve
Remove from the oven and let the custard cool slightly.
Serve warm, at room temperature, or chilled.