When making the pastry, use cold butter to create a crumbly texture and don’t overwork the dough. Stop mixing just as all of the ingredients come together.
Avoid whisking the custard too vigorously, as air bubbles can leave the surface pitted rather than smooth in the final pastry. When the custard still has a gentle wobble in the centre and the pastry is golden it’s time to take it out.
Dan tat: a British custard in a Cantonese bakery
Dan tat is the Cantonese name for an egg tart, influenced by Western baking traditions, in particular British-style custard tarts. Cantonese bakers adapted the recipe into smaller, lighter pastries with a less sweet filling that’s exceptionally smooth. It’s part of a wider history of Chinese baking that incorporated Western ingredients and techniques.
Hong Kong or Macau: two different tarts
A Hong Kong egg tart and Macanese pastéis de nata both have egg-custard fillings, but they developed from different culinary influences. Hong Kong egg tarts generally have a smooth, pale custard with no caramelised surface. Macanese pastéis de nata, however, derive from the Portuguese egg tart tradition and are characterised by laminated pastry and a blistered, caramelised custard surface.
Shortcrust or puff pastry
Shortcrust pastry gives the tart a crisp, buttery shell with a crumbly texture, as in the recipe above, while puff pastry produces a lighter, flakier shell with distinct layers. Both are used in Hong Kong bakeries, so the choice comes down to the texture you prefer.
Getting a smooth, glossy custard
A silky custard is one of the defining features of a Hong Kong egg tart. Avoid whisking the eggs too vigorously, as incorporating air can leave bubbles on the surface during baking. Let the sugar syrup cool before combining it with the eggs to prevent the heat from partially cooking them.
Straining the custard through a fine sieve removes any egg strands or coagulated egg, giving a smoother finish. Finally, avoid overbaking as the custard should still have a slight wobble when the tarts come out of the oven, and will continue to set as it cools.
For a different Asian-inspired take on the classic custard filling, try kaya jam, a sweet coconut and egg spread flavoured with pandan. Its rich coconut flavour and soft, jammy texture can be used to create a variation on the classic egg tart.