1) unsweetened pineapple juice in the fridge at home
2) McDonald's was out of icecream
3) not too much time, but really want dessert
Idea: pineapple granita!!!
Directions: just pour pineapple juice, or any other kind of juice you like/have, into a Pyrex container (I used 9x13). Keep in the freezer for 30 minutes. Then every 15 minutes use a fork to scrape down the slushy that will start forming, until it reaches the consistency you want.
Serving suggestion: why not use fancy martini glasses? Really classes this up :)
If pineapple granita is not fancy enough, add some chocolate chips!