Hard Boiled Egg - Do you know what is inside?

A conversation between a 5 year old and his dad.

Owen was looking in the fridge for something to eat. He sees an egg here is the conversation.

Owen: "What is this dad?"
Dad: "That is a hard boiled egg"
Owen: "What is that?"
Owen: "Oh I remember its the cooked egg with the cheese in the middle"

So there you have it. If you didn't know what was inside a hard boiled egg, you do now.

It is just cheese.