This is the cool part: jello is technically a colloid, which is a mixture where one substance is dispersed inside another. More specifically, it’s a gel. Scientists call it a semi-solid because it’s mostly liquid (over 80% water!), but it behaves like a solid because the gelatin network holds everything together. If you poke it, it deforms. If you stop poking, it bounces back—unless you poke it with your teeth, then it’s dinner.
This makes jello a very chill friend. It doesn’t scream at you like a cracking glass, and it doesn’t drip like a leaky faucet. It just presence-wobbles until you decide what to do with it. That’s why astronauts sometimes eat it in space—it doesn’t float away!
Why Does It Break If You Add Pineapple?
Here’s where your kitchen chemistry gets wild. If you toss fresh pineapple, kiwi, or papaya into jello, it won’t set. Why? Those fruits contain an enzyme called bromelain (in pineapple) that chews up the gelatin protein like a tiny Pac-Man. The collagen network can’t form, so you end up with a sad, sugary soup. Canned fruit is fine because heat kills the enzymes during canning.
Is Jello a Gel and Pudding a Sol? Understanding Their States and
So next time your jello turns into soup, don’t blame the recipe—blame the molecular bullies inside the fruit. It’s like trying to build a Lego tower while someone keeps stealing the bricks.
