When I was in Cairo, I used to order the best thing from a local sushi place. It was a frozen watermelon slushie-just real watermelon, frozen and then blended. In the summer, in Cairo, there is nothing better to ask for. Its easy enough to make, I wonder why more folks don't make it?
Edited to say: No alcohol was used, but I imagine that someone could do so if they were inclined.