I've been going to this restaurant for many years and it is consistently excellent.
The congee--the restaurant's namesake--is beautiful and the Chinese equivalent of matzoh ball and chicken soup (when it comes to warming the kishkes and making you feel good inside...not in flavour or consistency).
The green beans with pork, olive and dried fish is fantastic. That flavour combination is incredible. The lo meins are good and you can have a lot of fun with the lobster lo mein--good value.
The yeung chow fried rice is great, as are the taro dumplings (eat-in only as they won't keep their light gelatinous feel if you get them to go). Shrimp dumplings" Go for it. The barbecued duck and pork is made with some kind of hint of anise. If you don't like licorice, you'll probably not notice, but if you do? Watch it, or you'll quickly become addicted.
This place is great for lunch or dinner. I like the lunchtime atmosphere a bit better as there is a lot of natural daylight and the decor is very clean and inviting.
The staff are young and very professional. They mean business, which is appreciated in a restaurant that has serving large groups down to a science. Don't worry if you go as a couple or in a group of 15--you'll be served quickly and attentively.
The take-out option is a good one and they are equally professional. This is a marvellous restaurant and worth the trip. It makes those Chinese restaurants on Spadina look positively amateur.