My family has been making this summer adult slushie recipe for years! You make it in a large plastic container and keep it in the freezer to scoop out as desired!
Mix all ingredients in a very large freezer-safe container.
Make sure all frozen concentrate is broken up and dissolved.
Cover with a lid and freeze for at least 24 hours.
Notes
I make the afternoon before. I give it a good stir the next morning. It is not completely where I want it in the slushie stage until close to that 24-hour mark. Add a scoop to serve into desired cups. Serve with spoons or jumbo wide straws.