Whiskey Sour

• 1 ½ oz. whiskey
• 1 oz. lemon juice
• ½ oz. sugar syrup
• 1 cup ice
• ½ a slice of orange

Into a cocktail shaker add the whiskey, lemon juice, sugar syrup and half of the ice. 
Shake the cocktail shaker well then strain into a glass containing the remaining half a cup of ice.  
Garnish with a fresh slice of orange and serve on the rocks.