From Christine in our Facebook community:
Rhubarb Punch. Great summer drink.
6 cups cut up rhubarb
6 cups of water. Boil for 10 minutes and strain.
1 small package of Strawberry Jello. Add to above and stir until dissolved.
1 to 1/2 cups sugar
1 12oz can of frozen lemonade. Add to the above and stir.
Freeze until ready to use. Add equal amounts of 7Up to slush when serving.