oh i just came back from hk.
i da bao-ed egg tarts and century egg tarts from ta chong bakery (famous for its egg tarts!) it's at lyndhurst terrace. the egg tarts are one of a kind. the crust melts in your mouth while you can literally slurp up the egg. and the shop's walls are lined with pictures of chris patten devouring them. hard to go wrong!
another popular item to da-bao would be yung kee's famous roast goose (about 70 bucks for 1), comes in special packaging to survive the three hour flight home.
can also da-bao the po luo bao with custurd from st honor's cake shop. it's crisp on the outside with rich custurd spilling out from within.