½ cup granulated sugar
3 cups water
1 (3 ounce) package strawberry-flavored gelatin mix
3 cups pineapple juice
1/3 cup lemon juice
2 cups orange juice
1 (2 liter) bottle lemon-lime flavored soda
1 cup fruit liquor—apricot, peach, orange or banana are all fine
Bring the sugar, water, and strawberry flavored gelatin to a boil in a large saucepan; boil for 3 minutes. Stir in the pineapple juice, lemon juice, and orange juice. Pour the mixture into a wide container and freeze.
Combine the frozen mixture with the lemon-lime soda in a large wide bowl; stir until slushy. Add liquor and stir. Serve immediately.