Raspberry Rhubarb Sour (Raspberry Liqueur, Whisky)

INGREDIENTS:

1oz Whisky
1/4 oz Okanagan Spirits Raspberry Liqueur  
2 oz Rhubarb Puree 
2 oz Lemon juice

METHOD:

Shake ingredients vigorously in a cocktail shaker 
Strain into a glass filled with ice 
Garnish with a sugared Rhubarb

Cocktail Credit : Gerry Jobe