Ingredients
1 melon (honeydew or cantaloupe)
2 1/4 cups fresh pineapple juice
1 1/2 cups light rum (optional)
1/4 cup fresh lime juice (from 4 limes)
2 tablespoons Angostura bitters
2 liters ginger ale
Preparation
Make melon balls (about 3/4 inch each) using a melon baller. (You should have about 2 cups.) Transfer to a rimmed baking sheet, and freeze, about 1 hour.
Stir together pineapple juice, rum, lime juice, and bitters in a punch bowl. Slowly add ginger ale, being careful not to disperse the bubbles too much. Add frozen melon balls. Serve immediately.