Just ate 2 Big, homemade, yummy, vegetable flavoured (with egg) Bao by my mum (thanks mum!).
What I can say is my mum is really a talented cook, she bake nice cake, nice Bao, and food by her is always very delicious.
I am not sure about the ingredient, I am not the one who bake it, I am the one who eat (Yeah!!). Got egg inside, and the taste is good, can't find it outside.