From their menu and pictures online, they basically offered dumplings and steamed buns/baos just like banh mi boys or momofuku with pork belly or braised beef.
I decided on the Pork Belly Bao just because I liked pork belly and I can have a good comparison with others. It only took them about a few minutes to prepare my bao as I was the only customer at that time.
Similar to Banh mi Boys, they added the pickled vegetables from the Vietnamese bun with hoisin sauce and of course a slice of juicey pork belly! The bao/bun is a tad bigger than others. I would say it was very similar to BmBs.
I liked it a lot overall. Great portion size! Will come back for a snack. Highly recommend it.
More Yelp Reviews here >> http://www.yelp.ca/biz/mean-bao-toronto