Sashi Cheliah

A group of 12 beloved past contestants and 12 emerging home cooks enter the kitchen to share their love of food and compete.

The cooks compete in the first Service Challenge of the season. Two teams, aided by mentors Matt Sinclair and Sashi Cheliah, must cook an entrée and a main course dish for thirty diners.

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

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.

It's course versus course, fans versus favourites, for a massive service challenge, with the winning teams moving on to the immunity decider 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