Following the directions for use, Jello boxes (at least the ones I have used in recipes) advise consumers NOT to combine pineapple or kiwi fruit in Jello. This is just a word of caution to check the instructions on the Jello product you use!

As someone else stated, the enzymes in FRESH pineapple, papaya & kiwi will prevent the gelatin from jelling. With canned pineapple, the enzymes are destroyed through heat/processing and are the most common fruit found in thousands of jello salad recipes over many decades. You'd be hard pressed to find a recipe WITHOUT pineapple in it. My grandmother was allergic and could not eat fresh but could eat canned. Very different, there is nothing wrong with this recipe.

@Ari from Ontario-- The Jello box states not to use FRESH Pineapple or Kiwi. The will prevent the Jello from setting. Canned fruit is fine.