Preheat the oven to 300 degrees. In a medium saucepan cook the cream with the vanilla bean and salt over moderate heat until the surface begins to shimmer. In a large heatproof bowl, blend the egg yolks and granulated sugar with a wooden spoon. Slowly add the hot cream mixture, stirring gently. Strain the custard into a large measuring cup; skim off any bubbles. Arrange 8 shallow 4 1/2 --inch wide ramekins in a roasting pan. Slowly pour the custard into the ramekins, filling them almost to the top. Set the roasting pan in the center of the oven and carefully pour in enough hot water to reach halfway up the sides of the ramekins. Cover the pan loosely with foil and bake for about 1 hour, or until the custards are firm at the edges, but still a bit wobbly in the center. Transfer the ramekins to a wire rack to cool completely. Cover and refrigerate until cold, at least 3 hours or up to 2 days. Preheat the broiler. Set the ramekins on a baking sheet and blot the surfaces of the custards to remove any condensation. Using a small sieve, sift 2 teaspoons of the turbinado sugar over each custard in a thin, even layer. Broil the custards as close to the heat as possible until the sugar is evenly caramelized, 30 seconds to 2 minutes. Let cool slightly and serve at once. If using a deeper 3/4 -cup ramekins, bake the custards for about 20 minutes longer and reduce the sugar topping to 1 teaspoon per custard.
Recipe courtesy Le Cirque