Portuguese Tarts

I discovered and learned how to cook these fabulous tarts from a Portuguese chef who was working at the Perth Hilton. It reminds me of the steamed custard that my aunt in Malaysia cooked for me when I was a kid. She used to boil rock sugar, whisk in egg yolks, then steam the mixture. The result was a smooth, clear egg custard with the distinctive gentle sweetness of rock sugar. This Portuguese-style tart has the same character.