OK this is not a current favorite thing but when I was in college there was this Darimart near where I lived and they had a slush puppy machine and I used to drink them at least five times a week. I seem to remember that blue was my favorite.
Home made slush puppie recipe. How to get your glass packed with fruit and all you need is a blender and the freezer. A simple recipe which can wow your guests - layer with whole fruit and top with edible petals