The Canadian method
Canada blends differently. Instead of mashing grains together, distillers make separate whiskies from each grain — a delicate corn 'base' and vivid rye 'flavouring' whiskies — mature them separately, and marry them late, like a winemaker building a cuvée. Hiram Walker on the Detroit River has worked this way since 1858.
The word 'rye' in Canada historically means the style, not a mash percentage — but the Prairies also make thunderous 100% rye: Alberta Distillers in Calgary is the world's largest producer of it.