Royal expert Marlene Koenig corrected the user, saying Meghan Markle helped collect Hubb community recipes, not wrote a Middle Eastern cookbook.
Koenig says Kate cooks family dinners because they don't have a full-time team and most people can't flip pancakes.
Instead of holding the frying pan, Koenig advised people to leave it on the stove to turn pancakes.
The online debate highlights the scrutiny that members of the royal family face in their daily lives.