Why did my jello not set?
If the gelatin is not completely dissolved before cold water is added, it will not set properly.
Place the JELL-O in the refrigerator and allow it to set for at least six hours.
JELL-O poured into thick molds and JELL-O containing fruits and vegetables take longer to set..
How do you fix too runny Jello?
You should warm it up and add some more gelatin. I would re-heat half of your not-set jello and add a packet of unflavored gelatin. Dissolve and combine with the other half of your original concoction. As others have said, I think that pureeing the fruit AND adding all that liquid is the culprit.
What happens if you heat up jello?
If you heat the gel by putting it in the microwave or into your mouth, the water molecules get excited, and the weak bond is broken. The water molecules float away, and you get liquid water. The same happens with the bonds between the gelatin chains, breaking down the 3D matrix to form a liquid.
How long do you have to wait for Jello to set?
4 hoursRefrigerate for at least 4 hours, or until the gelatin is firm and doesn’t stick to your fingers. Once your Jello has firmed up, it’s ready to eat. If you’re making it for dessert, you can scoop some into a dish and top it off with whipped cream or Dream Whip.