Ingredients
4 cups water
3 cups sugar
6 cups coarsely chopped strawberries
2 cups coarsely chopped pineapple
1 cup pineapple juice
1 cup orange juice
1 cup freshly squeezed lemon juice
2 quarts seltzer water
Preparation
Make a simple syrup: Combine the water and sugar in a large saucepan, and bring to a boil over medium-high heat. Cook 5 minutes. Remove from heat, and set aside until syrup is completely cool.
Transfer syrup to a large container. Add strawberries, pineapple, pineapple juice, orange juice, and lemon juice; gently stir to combine. Fill two ice-cube trays with punch, and place in freezer. Place remaining punch in refrigerator to chill.
When ready to serve, remove punch from refrigerator; add the seltzer water and frozen-punch ice cubes. If transporting, add the seltzer just before serving. Serve in a large bowl or individual glasses.