This is a great little dessert. I think I first saw it on The Naked Chef on TV, and I've done it many, many times since that. Not much of a recipe really, but the result is a lot more than just the sum of its parts.
You need a pineapple, a couple of spoonfuls of sugar, and some fresh mint. Clean the pineapple and cut into small slices. Get a pestle and mortar, and bash the mint together with the sugar until it resembles bright green wet sand. Sprinkle over the pineapple. Indulge.