Whisky Cocktail: The Rusty Nail

Rusty Nail

The official IBA formulation for the Rusty Nail is nine parts of Scotch Whisky to 5 parts of Drambuie.  This is a rather awkward formulation,  so Instead I will suggest a simple 2:1  formulation:

2 oz Scotch Whisky
1 oz Drambuie
ice
lemon slice

First fill an 8 oz tumbler glass with crushed ice.
Add the Scotch Whisky and the Drambuie
Stir gently until a the outside of the glass frosts.
Garnish with a lemon slice.
Enjoy!