Anything from 10ml (1/3oz) to 15ml (1/2oz) maple syrup works in this recipe, depending on your maple syrup, lemons and personal taste. I've gone for the...
I also used Crown Royal as the base instead of an American whiskey in the spirit (pun intended) of the cocktail. At 80 proof it just didn't have backbone. I have not tried any other Canadien Whiskeys so perhaps that is the issue; perhaps I diluted to much when shaking as well.