Surprised this simple recipe isn't posted here already...I'm adding it for the Canada stop on the Summer 2008 Zaar World Tour. Of course you can substitute diet cola for "crown and diet". Crown Royal whisky is distilled in Gimli, Canada at the Gimli Distillery. Located on the western shore of Lake Winnipeg in Manitoba, Gimli has the natural resources that are key to making Crown Royal's perfect blend. Natural local grains, a pure water source and a climate that supports the distilling process all come together to contribute to the smoothness and quality of this excellent whisky.