Despite the mediocre reviews and the typical disappointing-ness of airport food, I was pleasantly surprised by my meal here at Nobel Burger.
The restaurant is located at the left end of Terminal 3, Concourse A. There is a lot of seating space, and the tables are all equipped with iPads. There's minimal server interaction - you just order at the iPads, then pay, then your food is brought to you. The menu app itself is pretty slick - you can see pictures of all the different items, and many items give you choices, such as extras you can add, whether you need gluten-free bread, etc.
The food itself was better than expected. I started with the mixed greens salad, which was large, tasty, and refreshing. The cheese crumbles were especially creamy and delightful. Then I got the YYZ burger, which was also delicious: the bun was toasty, the patty was juicy, and the toppings added nice flavor complexity.
Overall it was an enjoyable experience. Overpriced, for sure, but that's par for the course with airport food. I'm not going to show up to the airport early just to eat here, but if I'm stuck waiting in the terminal again, I'd come back.