What is this in my egg?

[Berrychickenmom]

My golden comet (1 1/2 years old) finally started laying again after molting. Cracked her 3rd egg open and there was this strange growth inside. I don’t have roosters, what could it be?

Thanks,
Emily

 

[Fields Mountain Farm]

Welcome to BYC!
Your egg is perfect!
Here's an article about eggs. Closer to the bottom is a section on eggs in the kitchen. Hope this helps!
https://www.backyardchickens.com/articles/interesting-facts-about-chicken-eggs.63122/

 

[lazy gardener]

It looks like an immature egg got included in the mature egg.

 

[aart]

Yep, immature ova(yolk).
Nothing to worry about unless it happens frequently/constantly.