✔ 最佳答案
It is likely that egg yolks are added to the siu mai wrappers in the dim sum resturants.
The same applies to wanton skins.
It wont make any different unless u are bothered by the color and there is a slight different in taste. I personally find the white skins more platable.
Try steaming in lower fire and with a lid on.
參考: experience from making chinese dumplings.