The Toronto Cocktail:
4 parts Canadian whisky
1 part sweet vermouth
1 part Fernet Branca
1/8 part maple syrup
Dash mint bitters
Garnish with an orange twist
The original version of this cocktail is from The Fine Art of Mixing Drinks (1948) by David Embury, who describes it as a "modified Old-Fashioned", but I think it makes more sense as a variation on a Manhattan, with vermouth replaced by Fernet Branca.
This recipe includes both vermouth and Fernet Branca, and substitutes maple syrup for simple syrup to make it more Canadian.
Later versions use Branca Menta which is difficult to find, so we use mint bitters here instead.