Preheat oven to 325˚F
Set ramekins into a large baking dish, like a 9x13 casserole dish.
In a saucepan, add heavy cream and kosher salt. Cut open the vanilla bean and scrape the flesh. Add the vanilla bean flesh plus the bean into the cream. Heat over med heat until it just comes to a simmer. Remove from heat.
Bring kettle of water to a boil and set aside.
In a medium bowl, whisk egg yolks and sugar together.
Remove vanilla bean from warm cream and squeeze any remaining flesh from the bean. Pour through a mesh sieve to avoid any possible chunks.
Add ½ cup warm cream to the egg yolk mixture in a slow stream, whisking steadily. Add another ½ cup warm cream into the yolks, whisking the same way.
Add the egg mixture back into the warm cream whisking continuously.
If needed, pour entire mixture through a mesh sieve again.
Divide creamy mixture evenly between the ramekins. Pour hot water into baking dish until the water reaches about ½ inch up the ramekin.
Bake 35-40 min. The top will look set, yet it will still appear jiggly. Internal temperature should come to 170˚F
Remove from oven and cool at room temp. Remove ramekins from water, place on a baking sheet, and refrigerate for 2 hours or more.
Just before serving, pour 1 teaspoon sugar on top of one ramekin and tap it until the top is evenly covered with sugar. Use a torch to heat and caramelize the sugar on each ramekin.