From Levy Restaurants Chefs at Arlington Park, Churchill Downs and the Kentucky DerbyIn an old fashioned glass, add three good-sized mint sprigs, one teaspoon granulated sugar, and 1/2 oz Kentucky Bourbon. Muddle aggressively. Fill glass with finely crushed ice. Add 2 oz bourbon. Stir, and refill with crushed ice. Garnish with mint sprig.