Louisville Cooler

1 1/2 oz bourbon whiskey
1 oz orange juice
1 tbsp lime juice
1 tsp powdered sugar

Pour the bourbon whiskey, orange juice, lime juice and powdered sugar into a cocktail shaker half-filled with ice cubes. Shake well, and strain into an old-fashioned glass half-filled with cracked ice. Garnish with a half-slice of orange, and serve.