When I lived in Japan this was a popular food that could be found in a steamy box near the register at any good "conbini" (Convenience store). These buns in Japan were filled with all sorts of fillings like Bean paste, Curried meats, vegetables or even pizza toppings. The Japanese names for them were azukemon, pizzamon, currymon, named depending on the filling inside. The chinese name for them are Baozi or Mantou. I'll be sharing a link to a recipe I found online and plan on making these on my next 3 days off. I think I'll use up some Gyoza filling I have in the freezer and maybe doing some ground chicken, garlic and green onion with some sort of a yakitori glaze mixed in.
If You guys try this in the next few days, let me know how it turned out for you.
(Hope posting a link to a blogs recipe isn't against the rules here)