I know what you are talking about.... lol! and just to let you know, young generation of chinese women don't know how to cook (at least the ones I know don't know)... And specially, they don't know how to make dim sum, cause it is time consuming, and it is very convenient to eat it outside (there is always at least one chinese restaurant that serve dim sum in each corner!.. and you can even buy it packed at supermarkets!!!)
About the recipe, I think I have seen that before (and even made that before).. I think it is mainly made of a mixture of regular flour and other type of flour (like tapioca, which gives it the chewy texture), water, (and probably eggs), and whatever filling you want, like ham, scallion, etc.
Let me see if I can still find it.