Years ago, a reader wrote probing for details on a mystery that had vexed him: What’s the deal with the cookies that Cookie Monster eats? The email said nothing else.

Sesame Street's Cookie Monster is getting a healthy makeover as the children's show begins focusing not just on teaching numbers and letters but also emotional and physical health.

Chocolate chip, sugar, Oreo — Cookie Monster will eat them ALL. He’s been known to chow down on inedible objects, even, if he gets too excited.

Ms MacLean told the newspaper that the Cookie Monster couldn’t just eat any old cookie – they have to be perfectly constructed to give the illusion they disappear when decimated by the monster.