The inside of a baked manapua

You might be used to calling it cha siu bau, char siu bun, or bbq pork bun... In Hawaii, it's called manapua. Here's an exerpt from wikipedia:

This food usually consists of a white bun with a dark pink-colored diced pork filling. The red pork filling is called char siu, and the dark pink color comes from marinating the pork with a very small amount of salt peter prior to slow roasting. The bun is occasionally baked, but is more frequently steamed when it is made. Manapua has come to mean any meat-filled or bean-paste-filled bun made with the same dough as described above including locally created versions with hot dogs, curry chicken, kalua pig, and even ube (purple yam), which is a popular vegetarian version of the manapua. In Hawaii, freshly prepared or prepackaged frozen manapua may be found in dedicated bakeries, restaurants, and chain convenience stores.

The manapua I ate above is from Chun Wah Kam Noodle Factory in Hawaii. Despite their name, they kind of specialize in manapua... steamed, baked, sweet potato, bbq, you name it. I liked their baked char siu manapua. The bun is sweet like Hawaiian sweet bread. The filling is a good mix of pork fat and meat.