Haven't read through all the comments but Canada is a big country. Some of the stuff on this list, I have no idea if you can get it out west or if it's any good out there.
Poutine from a food truck. theirs is always the best
ketchup chips
butter tarts
tortiere
montreal smoked meat (need to be in Montreal for this though)
donair (east coast)
also in late spring there's hodge-podge (east coast)
Toller is pretty tasty, I've gotten it a few times although I drink so little these days that when I do get something, I'll splurge and get something from the local brewery.
I'm excluding things like Smarties - to me those are English, but you can get them here.
Swimming Workout of the Day: Favourite Swim Sets: 2020 National Masters Champion - M50-54 - 50m Butterfly