To provide a heated and coagulated egg packed in a hermetically sealed container in which the egg is stored in a state immersed in an immersing liquid, having preservation quality, scarcely causing hardening of an egg protein even when stored for a long period and causing good egg taste.

This heated and coagulated egg packed in the hermetically sealed container is stored in a state immersed in the immersing liquid to which nisin is added, and the nisin is added to the immersing liquid so that the content of nisin becomes 100 iu/g to 1,000 iu/g.