In a saucepan over medium heat, combine the heavy cream and vanilla extract. Heat until it just begins to simmer, then remove from heat.
Whisk Egg Yolks and Sugar
In a mixing bowl, whisk together the egg yolks, granulated sugar, and a pinch of salt until pale and slightly thickened.
Temper the Egg Mixture
Gradually pour the hot cream into the egg mixture, whisking constantly to temper the eggs and prevent them from curdling.
Strain the Mixture
Strain the mixture through a fine-mesh sieve into a clean bowl to remove any cooked egg bits.
Prepare Ramekins
Place 6 ramekins in a baking dish and fill them with the custard mixture, leaving a little space at the top.
Add Water Bath
Carefully pour hot water into the baking dish around the ramekins, ensuring the water reaches halfway up the sides of the ramekins.
Bake
Bake in the preheated oven for 30-35 minutes, or until the custards are set but still slightly jiggly in the center.
Cool and Chill
Remove the ramekins from the water bath and let them cool to room temperature. Then refrigerate for at least 2 hours or until ready to serve.
Caramelize the Sugar
Just before serving, sprinkle a thin layer of granulated sugar on top of each custard. Use a kitchen torch to carefully caramelize the sugar until it forms a golden, crispy layer.