Cha siu bao are a traditional Chinese dish and one of my fiancee's favorites - she introduced me to them. Bao is the Chinese word for bun; cha siu describes the filling. I had several recipes, none of which turned out perfectly; this is a composite of 2 recipes, and I think I've got it. These are somewhat time-consuming to make, but are well worth it on special occasions. Prep time includes time for the bao to rise.