3/4 oz Fresh Lemon Juice
3/4 oz Vanilla Simple Syrup
4-6 Mint Leaves
Chill a Tumbler Glass and leave it aside. Pour all the ingredients, even the Mint Leaves, in a Shaker and top it with thick, dry Ice Cubes. Give it a Hard Shake. Empty your Glass and double strain the liquid into the Tumbler on some dry Ice Cubes. You have to double strain to avoid the smashed Mint Leaves in your glass. If possible get the top of a nice mint branch, slap it on the palm of your hand to release the aroma and garnish your Cocktail. Serve.
Enjoy it debating wheter or not it is a sin to use good whisky for Cocktails.