Chloe Carroll

The amateur cooks have one hour to recreate their signature dishes for the judges' first auditions, as the judges and nine past winners offer their support.

The contestants get a pleasant surprise when celebrity chef Gordon Ramsay drops by with a mystery box challenge.

The 23 cooks enter the MasterChefAustralia kitchen for the first mystery box challenge of the season. This year the rules are changing, the winner of the mystery box will get a game-changing advantage

Nigella Lawson stops by the kitchen for a week of challenges and surprises for the contestants, while her mystery box reveals a range of her favourite ingredients.

The team that lost the MCG service challenge must go up against each other in the elimination challenge. They must create a dish that inspired their love of food.

The mystery box winner and the creators of the top two dishes from the invention test have the opportunity to cook for immunity and have Gordon Ramsay as their mentor.