I'm sure there are ways you could make this recipe very complicated by adding in all sorts of extraneous ingredients. I kept it simple with just two: pineapple and basil. I let both of them soak up some sunlight for a couple days.
If it looks like you've recreated Nikelodeon's slime, you've succeeded.
1 cup packed fresh basil
Remove the core from the pineapple and chop into cubes. Puree pineapple in blender with freshly-picked basil leaves. Pour in ice cream maker and churn. It's that simple.