Hannah E.
Yelp
The good: the fillings are freshly handmade and generously portioned (you can see them making it through the window into the open kitchen). They give you good soy and vinegar to mix for your dipping sauce, as they should - how many places don't do vinegar is surprising, but Union does.
The bad: when I went, both dumplings (pan fried shrimp, pork, and egg, and boiled lamb/carrot) were really undercooked. It was most noticeable in the pan fried version, where the dough was still raw enough to show my fingerprints in the pillowy part and be crunchy in the pinched part. We sent them back to be re-cooked, which they did immediately with many apologies, and when they came back out they were - still exactly the same amount of undercooked. (They were different dumplings too - we knew because they accidentally switched which dumplings were fried and which were boiled. That's fine of course, just mentioning that they took the time to make entirely new ones for us.)
I might still return to see if they've worked this out, and/or stick to boiled dumplings, because I did like the filling and I tend to have a lot of time to kill in Lincoln Square between Old Town School classes.