This great whiskey sour recipe is courtesy of Martha's TV Kitchen.
Rub the lemon wedge around the rim of a 12-ounce rocks glass. Place turbinado sugar in a shallow dish. Dip the rim of the glass in the sugar to coat; set aside.
In a large cocktail shaker, combine bourbon, orange juice, lemon juice, granulated sugar, and ice. Cover, and shake vigorously until all ingredients are well combined and cold. Pour into prepared glass, and garnish with orange slice.