I spent a year out of Canada, and when I came back, all I wanted to do is head on over to Yan's Cook (formerly Yan's Wok) and grab Combo C.
Their sweet and sour pork, with wonton soup, and spring roll, might just be the greatest thing I've ever eaten. Unfortunately it's only available during the lunch rush, Monday to Friday. Six dollars, for more food than you'll be able to finish is always a great value.
There are still a number of options, which come with drinks (instead of soup) at similar price points. In fact, the sweet and sour pork is always on order - regardless of the date and time - it just doesn't hold the same charming allure when you're not ordering Combo C.
If you come during a busy time, be prepared to place your order, take a number, and wander First Markham Place for a little while, before coming back - claiming your food - and seeking out a table in the food court.