Triple Citrus Bars

Using three types of citrus (orange, lemon, and lime) gives these bars a slightly more complex, floral flavor.

Follow the recipe for Key Lime Bars, substituting 1½ teaspoons each grated lime zest, lemon zest, and orange zest for the lime zest, and using 6 tablespoons lime juice, 1 tablespoon lemon juice, and 1 tablespoon orange juice in place of all the lime juice.