Adapted from: Baked
Put the egg yolks in a large heatproof bowl and set aside.
In a small saucepan, combine the granulated sugar and 1/4 cup water and stir gently with wooden spoon or heatproof spatula to combine. Avoid splashing the sides of the pan. Cook over medium heat until sugar’s dissolved, then increase the heat to medium-high and cook until mixture reaches a dark amber color. Don’t stir during this time–to keep the color consistent, you can swirl the pan if necessary. Remove from heat and let stand one minute before slowly stirring in the cream. Pour the caramel mixture into a small bowl and set aside.
In another small saucepan, combine the brown sugar, cornstarch and salt and stir in the milk with a whisk to combine. Cut the vanilla bean in half lengthwise, and using the tip of a knife, scrape the seeds into the milk mixture. Cook over medium-high heat, whisking occasionally, until it comes to a full boil. Remove from the heat and add the caramel. Whisk until combined, then pour one third of the mixture over the eggs to temper them. Don’t add the entire mixture at one time. Keep whisking the egg mixture and add another third of the hot milk mixture. Transfer the egg mixture back to the saucepan with the milk mixture and, whisking constantly, bring to a boil over medium heat. Once it comes to a boil, continue to boil for 2-3 minutes, whisking constantly, or until it reaches a thicker almost pudding-like consistency. Pudding will also thicken as it sets, so don’t worry if it’s not the perfect pudding consistency at this time.
Remove from heat and add the butter and the whiskey. Keep whisking for about one minute to cool the pudding. Remove the vanilla bean. If your pudding looks chunky, filter through a mesh seive. Cover the top of the pudding with plastic wrap and press lightly down so it touches the surface of the pudding. This will prohibit the pudding from getting a thick skin on top. Refrigerate until ready to use. Pudding will thicken and continue to set.
To put together: whip the heavy cream (with a teaspoon of sugar if you’d like) and add a dollop on top of each serving of pudding. Then top with chocolate shavings.