Description
This Japanese Sweet Potato Crème Brûlée combines the creamy richness of traditional crème brûlée custard with the natural sweetness and earthy flavor of roasted Japanese sweet potatoes. Perfectly roasted sweet potatoes are hollowed and filled with a smooth vanilla-infused custard, then topped with caramelized sugar for a delightful crackling crust. A unique twist that balances velvety texture and caramel crunch, ideal as an elegant dessert for gatherings.
Ingredients
Scale
Sweet Potatoes
- 7 medium Japanese sweet potatoes
Custard
- ⅔ cup sugar
- 3 egg yolks (omega-3 enriched recommended)
- ¼ cup cornstarch
- ¼ tsp salt
- 3 cups milk
- 2 tbsp unsalted butter
- 1 tsp vanilla extract
For Caramelizing
- ¼ cup sugar (caster or granulated) for caramelizing
Instructions
- Roast Sweet Potatoes: Preheat the oven to 392°F (200°C). Wrap each Japanese sweet potato individually in foil and roast them for 1 hour and 10 minutes, or until they are completely tender when pierced with a fork.
- Prepare Custard Base: Meanwhile, in a medium saucepan, combine ⅔ cup sugar, ¼ cup cornstarch, and ¼ tsp salt. Gradually whisk in 3 cups of milk, ensuring there are no lumps. Heat the mixture over medium heat, whisking constantly until it thickens and becomes smooth.
- Temper Egg Yolks: Lightly beat the 3 egg yolks in a separate bowl. Slowly add about ¼ cup of the hot milk mixture into the yolks, whisking constantly to temper them and prevent scrambling.
- Combine and Thicken Custard: Pour the tempered yolk mixture back into the saucepan with the remaining milk mixture. Cook for an additional 2 minutes over medium heat while whisking continuously until the custard thickens further.
- Add Flavor and Finish Custard: Remove the saucepan from heat, then stir in 2 tablespoons unsalted butter and 1 teaspoon vanilla extract until fully incorporated and smooth.
- Cool Custard: Transfer the custard to a bowl and cover it tightly with plastic wrap pressed directly onto the surface to prevent a skin from forming. Let it cool to room temperature.
- Prepare Sweet Potatoes for Filling: When the roasted sweet potatoes have cooled for about 10 minutes, cut the tops off each potato. Carefully scoop out approximately one-third of the flesh from each to create space for the custard filling.
- Fill Sweet Potatoes: Evenly spoon the cooled custard into the hollowed-out sweet potatoes, filling them to the top.
- Caramelize Sugar Topping: Sprinkle about 1 teaspoon of caster or granulated sugar evenly over the custard surface of each filled sweet potato. Use a kitchen torch to caramelize the sugar until it melts, bubbles, and turns a dark amber color, forming a crisp crust.
- Serve: Allow the caramelized sugar topping to harden for a few minutes before serving. Enjoy the unique blend of creamy custard, sweet potato, and crunchy caramel.
Notes
- Omega-3 enriched egg yolks enhance the nutritional value but can be substituted with regular egg yolks.
- If you do not have a kitchen torch, you can place the sweet potatoes under a broiler for a few minutes but watch carefully to avoid burning.
- Use Japanese sweet potatoes specifically for their natural sweetness and firm texture.
- Ensure the custard is cool before filling the sweet potatoes to maintain structure and safety.
- Store leftovers covered in the refrigerator and consume within 2 days; re-crisp the sugar topping with a kitchen torch before serving.
