Ingredients

1 pineapple, peeled, halved lengthwise, and cored 

4 ripe but firm plums, pitted and cut into wedges 

1 tablespoon superfine sugar, or more as desired 

3 ounces Cointreau 

3 ounces brandy 

1 750-ml bottle chilled fruity red wine 

1 1/3 cups pineapple juice 

1 cup sparkling water or seltzer 

Preparation

Cut half of the pineapple into 3/4-inch-thick spears and the other half into 1-inch chunks. Transfer all pineapple to a pitcher, and add plums. Sprinkle with sugar, and stir to combine. Add Cointreau and brandy; let sit at least 1 hour at room temperature. Stir in wine, pineapple juice, and sparkling water. Sweeten with more sugar, if desired, and serve chilled.