Method

Step 1

Chill two glasses.

Step 2

In a cocktail shaker, add the whisky, lemon juice, simple syrup, spices and Duncan's Egg white.

Step 3

Dry shake vigorously for 10-15 seconds to build the foam.

Step 4

Add ice and shake again until well chilled.

Step 5

Strain into the two glasses.

Step 6 

Add 1 dash of bitters to each drink and swirl lightly for a marbled effect.

Step 7

Garnish with a twist of orange peel, dusting of cinnamon, or a cherry.