Pastéis de nata from Portugal look similar. For them, you bake a flour-thickened cream custard in puff pastry at 250 °C until the surface gets dark spots. You bake dan tat at lower heat, first at 200 °C and then at 170 °C. Pass the egg mixture through a sieve twice and prick air bubbles with a toothpick. This keeps the surface mirror smooth. When you take them out, the filling may jiggle slightly in the middle, and it firms up as it cools.
The same egg custard is steamed in the buns for Nai Huang Bao. Set with caramel, you know it as Bánh Flan from Vietnam. On the dim sum table, the tarts sit next to Har Gow.
Image: AI-generated.
