Peter's Drive-In is a Calgary classic that delivers big taste and even bigger portions. The single burger is actually a patty and a half, and it's coated in what I've heard referred to as a "secret sauce", which tastes remarkably just like ketchup. I don't know exactly for whom the flavor of ketchup is a secret, but I digress.
I once made the mistake of ordering the large fries, which turned out to be a mountain of mediocre fries held in their small box by a tinfoil tent. They were like Jiffy Pop fries, which I barely made a dent in, and afterwards regretted ordering. However, what the fries lack in quality, the onion rings and milkshakes more than make up for. The onion rings are crispy and delicious, and the shakes are thick and creamy and come in about thirty different flavors.
I've certainly had a better burger, but you simply cannot have a better true Calgary experience than visiting Peter's Drive-In - it's part of the initiation of living in this city!