Mix up one of these festive drinks at your next get-together! These big-batch beverages will keep you and your guests in high spirits. Blackberry Mojito Punch Photo: Jennifer DavickIngredients3 cups blueberry-blackberry juice blend 2 (12-oz.) cans frozen mojito mix2 (1-liter) bottles club soda, chilled1 1/2 cups white rum3 limes, sliced1 (12-oz.) package frozen blueberriesGarnish:...