Smooth, velvety vanilla custard with a delicate, creamy texture is a timeless, elegant family dessert. This simple, classic preparation showcases pure vanilla flavor at its finest.
Preheat the oven to 325°F (163°C) and set a kettle of water to boil for a water bath.
In a medium saucepan, heat whole milk and heavy cream over medium-low heat until steaming, not boiling (small bubbles around the edge), then remove from heat.
In a large mixing bowl, whisk together eggs, egg yolks, granulated sugar, and salt until combined and slightly thickened, but not frothy.
Gradually pour the warm milk mixture into the egg mixture, whisking constantly to prevent scrambling. Stir in pure vanilla extract.
Strain the custard through a fine-mesh sieve into a large measuring cup, then divide evenly among 6 ramekins placed in a roasting pan.
Pour hot water into the pan until it reaches halfway up the sides of the ramekins. Bake for 35–40 minutes until custards are just set around the edges but still slightly wobbly in the center.
Remove ramekins from the water bath promptly and cool to room temperature. Refrigerate at least 2 hours before serving for the creamiest texture.