Preheat the oven to 350°F. In a small saucepan, heat the milk until bubbles form around the sides of the pan. Promptly remove the saucepan from the heat.
In a large bowl, whisk together the eggs, sugar and salt until blended but not foamy. Slowly stream in the hot milk while constantly stirring. Stir in the vanilla.
Pour the egg mixture through a fine mesh strainer and into a 1-½-quart round baking dish. Sprinkle with nutmeg. Place the round baking dish in a larger baking pan. Pour very hot water into the baking pan to within ½ inch of the top of the round baking dish.
Bake the custard until a knife inserted near the center comes out clean, 55 to 60 minutes. The center will be soft and jiggly. Remove the baking dish from the water bath and immediately place it on a wire rack. Let the custard cool at room temperature for 30 minutes.
Cover the homemade custard with storage wrap, and refrigerate until it’s nice and cold. Scoop servings into bowls and enjoy with fresh berries, if desired!
