Jello shots are usually best within 3 to 5 days in the fridge, and they can often stay okay for up to about 7 to 10 days if stored well. For the best taste and texture, keep them covered and refrigerated the whole time.

Storage basics

  • Keep them in airtight containers or lidded cups.
  • Store them in the coldest part of the refrigerator.
  • Don’t leave them out at room temperature for long.

When to toss them

Throw them out if you notice mold, a sour or off smell, discoloration, sliminess, or major separation. If they were made with fruit, dairy, or other perishable add-ins, the safe window can be shorter.

Practical rule

If they’re plain jello shots, make them a few days before the party and aim to finish them within the first week. If they smell weird or look off, don’t risk it.