1 can (6 ounces) can frozen pineapple juice concentrate, thawed
1 can (6 ounces) frozen orange juice concentrate thawed
3 cups water
3 cups milk
Dash of salt
1/4 cup sugar
1 quart rainbow sherbet
Mix together in a large bowl the pineapple and orange juice concentrates, water, milk, salt and sugar; stir until sugar is dissolved. Spoon sherbet into punch and stir lightly.
Serve very cold, surrounded by crushed ice if possible.