A viral Japanese dessert featuring roasted sweet potatoes filled with silky vanilla custard and topped with a crunchy caramelized sugar crust.
2 medium Japanese sweet potatoes
2 egg yolks
1.25 cups heavy cream
3 tbsp granulated sugar
1 tsp vanilla extract
1 tsp cornstarch
Pinch of salt
1.Preheat oven to 400°F (200°C).
2.Roast potatoes for 45–60 minutes until tender.
3.Whisk egg yolks, sugar, cornstarch, and vanilla.
4.Heat cream until simmering and temper into eggs.
5.Thicken custard over low heat while stirring.
6.Cut potatoes in half and fill with custard.
7.Chill for 2 hours in the refrigerator.
8.Sprinkle with sugar and torch until caramelized.
Use Murasaki or Satsumaimo for best texture.
Chill fully before torching for the best results.
Serve with green tea or black sesame ice cream.