Maple taffy (sometimes maple toffee in English-speaking Canada, tire d'érable or tire sur la neige in French-speaking Canada; also sugar on snow or candy on the snow in the United States) is a sugar candy made by boiling maple sap past the point where it would form maple syrup, but not so long that it becomes maple butter or maple sugar. It is part of traditional culture in Québec, Eastern Ontario, New Brunswick and northern New England. In these regions, it is poured onto the snow, then lifted either with a small wooden stick, such as a popsicle stick, or a metal dinner fork. -Wikipedia How does the climate of Canada allow this frozen treat become a tradition?

Canada's climate has enabled that there is an abundance of maple trees and large amounts of snow in the long and very cold winters.

Explanation:

Canada's climate is temperate, on the colder end of the spectrum though, in the aforementioned regions. The summers are mild, the spring and autumn relatively cold, while the winters are very cold and with high amounts of snowfall. These climate conditions are excellent for the growth of maple trees, which are the trees from which the maple is harvested.

Having an abundance of these trees means that the people had an abundance of maple as well. The maple has been used to make several different products, one of which is the maple taffy. The people of these regions got a little bit experimental with the maple taffy and used the snow for it, on which they poured the maple taffy and it was solidifying because of the very cold snow and air, thus getting a lollypop-like delight.