Hungry and in Terminal 3 (near gate B5-B1) at YYZ? Given the limited options, you'll likely end up at Tap & Pour if you want something other than snacks. In this fast paced restaurant with people zipping in and out as they shovel down food before a flight, I think T&P do an alright job. They probably deserve a 1/2 star rating: 3.5.
There are lots of options on the menu for both food and drink. I went for the most paleo looking item: the cobblestone salad. Other than the tomatoes which were obviously out of season and a bit mealy, I really enjoyed the salad. Steak, bacon, egg, avocado, and blue cheese on a bed of lettuce. Well proportioned, solid choice.
The prices of things are a bit high, which is to be expected. My salad was $20+ but it was quite large and filling.