Combine the cinnamon, ginger, nutmeg and salt in a small bowl and mix well.
For the creme brulee:
Preheat the oven to 325 degrees F.
Pour the cream into a heavy-bottomed medium saucepan over medium-high heat. Split and scrape the vanilla bean into the cream and add the cinna-a-spice blend. Bring to a boil, cover and remove from heat. Allow the vanilla bean and spices to steep in the cream for 10 minutes.
In a mixing bowl, whisk together the egg yolks and 1/2 cup sugar until pale yellow. Remove the vanilla bean from the spiced cream and whisk the spiced cream into the egg mixture slowly until fully combined.
Evenly divide the mixture among six 8-ounce ramekins. Carefully transfer the ramekins to a 9- by13-inch baking dish. Pour hot water into the baking dish until it reaches halfway up the sides of the ramekins. Bake until the custard is set, yet slightly loose in the center, 50 to 55 minutes. Remove from the oven and refrigerate until firm, at least 2 hours.
Top each custard with 1 to 2 teaspoons sugar. Using a kitchen blowtorch or the broiler, caramelize the sugar evenly just before serving.
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