Set the oven to 325°F (165°C).
Mix granulated sugar 1/2 cup and egg yolks. Leave it aside.
Meanwhile, boil water in a pot for poring into the baking sheets later for water bath.
In a medium pan placed over medium heat add the heavy cream and salt and heat. Remove when it begins to simmer.
Add vanilla extract or scrape half of the inside of the vanilla bean and Stir.
Remove warm heavy cream about 1/2 cup and mix with egg yolks.
Pour the egg yolk into the warm heavy cream and whisk them together.
In a large baking pan place ramekins. Fill the top with baking custard. Put the hot water in the pan to about 1/2 inch.
Using an oven mitt put the hot pan to the oven.
Bake till the centers are jiggly and edges of custard are set about 35-40 minutes.
The baking time will vary by a few minutes depending on the depth of your ramekins.
Rule of thumb is they are ready when the thermometer reads 170°F (77°C).
Use an oven mitt to remove the pan from oven then ramekins and put them on a wire rack to cool at room temperature for at least 1 hour.
Place into refrigerator until ready to serve. For best result refrigerate for 1 hour before caramelizing the sugar.
The creme brulee can be kept refrigerated without the caramelized sugar for up to 4 days.
When ready to serve, sprinkle the remaining granulated sugar to form a thin layer that covers the top of the custard.
Use a kitchen torch to caramelize the sugar then serve immediately.
You can store in the refrigerator carmelized for around 1 hour before serving.