Ben Borsht

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 contestants visit Maggie Beer's Eatery in the Barossa Valley for their elimination challenge, and participate in a masterclass at the Adelaide Markets.

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.