Brent Draper

The judges are joined by special guest Jamie Oliver, as the contestants prepare for a season of secrets and surprises.

In the first elimination challenge of the season, the contestants must cook a dish from their favourite childhood memory. The least impressive dish will send its cook home.

Contestants raid Shannon Bennett's fridge as they seek to create a tasty dish in 45 minutes, with the winner facing Vue de monde's Hugh Allen in the hope of winning immunity.

Contestants are challenged to create dishes that feature a chicken or an egg. The one with the least impressive dish will be sent home.

There's a catch to the flavour bombs that Jamie Oliver has left behind for the contestants to cook with. They will only be revealed 15 minutes into the cook and must be included in the dish.

MasterChef Australia champion Emelia Jackson sets the contents of the mystery box; the three best dishes will be awarded an immunity pin.