From my personal experience I love Dim Sum. These are special steamed treats, with various fillings. Sure in the beginning it is difficult to figure out which shape means which filling. But for me as I told before, this mobile guide was useful. There was an integrated Dim Sum Guide with pictures and describtions, so I could compare the photo and the actual dish infront of me. This was helpful for me, because some of them looked like dessert and I would have had a bad suprise though So but generally, just try everything you can, the hygienic standard is high and you can even try the market stalls without problems. Just try what you feel like