How do you know when a capon has gone off?

A capon may have gone off if it exhibits an off-putting sour smell, a slimy texture, or discoloration, such as gray or green spots. Additionally, if the meat feels excessively sticky or if there are any unusual changes in its appearance, it's best to err on the side of caution and discard it. Always check the expiration date and ensure it has been stored properly to minimize the risk of spoilage.