Combine the whiskey, 3 cups cranberry juice, the pomegranate juice, orange juice, lime juice, sugar and 1/2 cup water in a large, shallow freezer-safe container. Stir well, then cover and freeze until the mixture is icy, stirring every 20 to 30 minutes, 4 to 5 hours.
Scrape the frozen mixture with a spoon and divide among glasses, filling them three-quarters of the way. Divide the remaining 3 cups cranberry juice among the glasses and top with the diced cranberries; stir until slushy and garnish with mint.
Photograph by James Wojcik
Recipe courtesy Robert Irvine for Food Network Magazine