Ingredients

• 4 cups water
• 1 cup white sugar
• 1 cup lemon juice
• 1 (6 ounce) package lime-flavored gelatin mix
• 1 (46 fluid ounce) can pineapple juice
• 2 (2 liter) bottles lemon-lime soda

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Instructions

1. Bring water and sugar to a boil in a large sauce pan; add lemon juice and gelatin mix. Stir until dissolved and set aside to cool.
2. Transfer cooled gelatin mixture to a 5-quart container and stir in pineapple juice. Freeze until thickened but not solid, about 2 hours.
3. Spoon about half the pineapple-lime mixture into a large punch bowl. Top with 1 bottle lemon-lime soda. Refill with remaining frozen mixture and soda as needed.