Yum yum yum yum. Dumplings steamed, dumplings fried, many kinds, you can't go wrong. Bustling, short wait times, inexpensive.
NB: cash only. Americans: make sure you have Canadian cash. Assuming you can pay with US currency seems to be a pet peeve of the proprietor (he chatted us up about this).
Protip: half-cooked potato threads appetizer is amazing, so is the cucumber salad. Get these for a fresh bite before and to offset the dumplings. The green onion cake is pretty good, too.