MasterChef Australia

Special guest Jamie Oliver joins the judges as the contestants prepare for a season of secrets and surprises.

Jamie Oliver returns to present the contestants with two difficult challenges: a 15-minute meal and his mushroom and spinach rotolo.

There's a catch to the flavor 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.

Contestants must create the tastiest dish in 45 minutes using ingredients from Shannon Bennett's fridge. The winner then faces Hugh Allen of Vue de Monde to win an elusive immunity pin.

In the first elimination challenge of the season, the contestants must cook a dish from their favorite childhood memory.

Poh Ling Yeow presents the season's first mystery box challenge; the contestants must create a winning dish with basic staples and little other ingredients.