Why would there be blue or gray edges on raw frozen chicken tenders?

There are a few reasons why raw frozen chicken tenders may have blue or gray edges.

* Normal discoloration due to freezing: When chicken is frozen, the water in the cells turns to ice crystals, which can cause the meat to appear pale or discoloured. This is normal and does not indicate that the chicken is unsafe to eat.

* Bruising: Bruising can occur during processing or transportation of the chicken. This can cause the meat to appear bluish or purple. Bruising does not affect the safety of the chicken, but it can affect the texture and flavour.

* Spoilage: Spoilage is caused by the growth of bacteria on the chicken. This can cause the meat to appear slimy, discoloured, or to develop an off odour. Spoiled chicken is not safe to eat.

If you are concerned about the safety of your frozen chicken tenders, you should inspect them carefully for any signs of spoilage. If you see any signs of spoilage, you should discard the chicken. You should also cook frozen chicken tenders thoroughly to ensure that any harmful bacteria are killed.