An eliminated mentor returns with a pop quiz in history.
The remaining cooks face three rounds of literature-themed competition.
Cooks dissect iconic dishes and use the ingredients in a new way.
The mentors compete for the chance to win the return of an eliminated cook.
It's a numbers game as the home cooks get divided into groups of three.
The home cooks face off in an art-themed dessert challenges.
The home cooks face a geography test and dip into popular world cuisines.
Nine home cooks enter the kitchen and meet their All-Star mentors.