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This has been our family's all time "tim sum" favourite, the traditional chinese restaurant in the 70's serve was flaky skin pastry utilizing mainly lard . Though some of the restaurant here still serving the flaky skin type, but the taste is un-competible since it has been replace by crisco for a more healthy choice.
I planned to bake this using traditional flaky skin recipe which i found on web, but has last minute changed my mind as the fats required on oil dough for both crisco & butter are too heavy . Alternatively , go for the crust pastry skin which is equally good after all we are after the egg custard.