7-Eleven®

Put on a big red smile. Now you can make your own version of the popular convenience store slush, complete with brain freeze. You must have a blender to make my 7-Eleven's Slurpee recipe, and enough room to stick that blender into your freezer to get it nice and thick. My recipe gets close to the original with Kool-Aid mix and a little help from cherry extract, but you can make this drink with any flavor Kool-Aid mix (if you decide to make some variations, don't worry about adding extract). My recipe makes enough to fill one of those giant-size 32-ounce cups you find at the 7-Eleven. Now I should hack the spoon-straws. 

I've cloned a ton of famous drinks. Find your favorites here. 

Source: Top Secret Recipes: Sodas, Smoothies, Spirits and Shakes by Todd Wilbur