How To Know If Frozen Turkey Is Bad. You can also tell by the color and the texture of the ground meat. The large crystals of ice on the beef can be a clear indication that it is rotten and should not be cooked or consumed.

The unopened box of deli turkey or any other lunch meats lasts for about 2 weeks in the fridge when stored appropriately. Any color that was not on the turkey when you cooked it signifies possible spoilage. If your cooked turkey appears to be getting darker than it was when you cooked it, it may be going bad.