To ensure the custards cook gently and gradually, place the ramekins in a baking pan lined with a kitchen towel and partially fill the pan with hot water (known as a water bath). This helps insulate the delicate custards from the heat.
Ingredients:
Juice of 2 lemons
2 cups heavy cream
Zest of 1 lemon
1/2 cup plus 6 tsp. sugar
1 tsp. vanilla extract
5 egg yolks
Directions:
Preheat an oven to 300°F. Line a shallow baking pan with a kitchen towel. Have a pot of boiling water ready.
In a small saucepan over medium-high heat, bring the lemon juice to a boil. Reduce the heat to medium-low and simmer until the juice is reduced to about 1 Tbs., 3 to 5 minutes.
In another saucepan over medium heat, combine the cream, lemon zest and the 1/2 cup sugar. Cook, stirring occasionally, until steam rises from the surface, 2 to 3 minutes. Remove the pan from the heat and let stand for 15 minutes.
In a bowl, whisk together the vanilla and egg yolks until smooth and combined. Slowly add the cream mixture, whisking constantly, then stir in the reduced lemon juice. Strain the mixture through a fine-mesh sieve set over a bowl and divide among six 3.5-oz. ramekins. Place the ramekins in the prepared baking pan and add boiling water to fill the pan halfway up the sides of the ramekins. Cover the pan loosely with aluminum foil and bake until the custards are just set, about 40 minutes.
Remove the ramekins from the pan and transfer to a wire rack. Let the custards cool to room temperature, about 1 1/2 hours, then refrigerate for at least 3 hours or up to overnight.
Just before serving, sprinkle 1 tsp. sugar evenly over the surface of each custard. Using a kitchen torch according to the manufacturer’s instructions, move the flame continuously in small circles over the surface until the sugar melts and lightly browns. Serve immediately. Serves 6.
Williams-Sonoma Kitchen.