Egg tart (蛋撻): composed of a base made from either a flaky puff pastry type dough or a type of non-flaky cookie dough with an egg custard filling, which is then baked. Some high class restaurants put bird's nest on top of the custard. In other places egg tarts can be made of a crust and a filling of egg whites and some where it is a crust with egg yolks. Egg tarts now come in a variety of different flavors, taro, coffee, and strawberry for example. 葡撻 (po4 taat1) is a Portuguese styled egg custard, common in Hong Kong, with origins in Macau, and has a layer of burnt sugar on the surface.