I recently went to Zazen restaurant on 21st and 5th after reading about it on this message board. The food is really fantastic. They have black cod with miso, which is usually my favorite thing in the world, but then I had these dumplings with crab meat and a radish/scallion sauce that was equally as good, if not better. The food's not too expensive and I went on a friday night and there were three other people eating there. i would recomend it to anyone, as well as asking the owner about what to order as he was very helpful and not too busy.