The amateur cooks are given one hour to recreate their signature dish for the first of the two judges' auditions. The judges introduce the nine past winners of the program, who are there to cheer them on.

After handing out 18 aprons on the first day of cooking, the judges are looking for six more cooks to round out the top 24. The cooks who were given a second chance will battle it out in a challenge.

Our 2018 cooks enter the MasterChef kitchen for their first challenge as the top 24. The contestants need to imagine they are hosting the judges at their house for a meal, cooking anything they want.

In the first elimination challenge of the season, three contestants fight to stay in the competition. They are given 75 minutes to cook, using only the ingredients contained in their fridges from home.

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

The three contestants with the least impressive dishes from the invention test face-off in the pressure test. Queen of the kitchen Maggie Beer enters with the dish to be recreated.

The winner of the mystery box challenge and the three best-performing cooks from the invention test will compete for immunity, with Shannon Bennett back in the kitchen to guide and mentor the contestants.

The contestants find themselves on the turf of the iconic MCG for the first team challenge. Split into two teams, each must cook delicious and nutritious food for 50 diners using a different protein.

The losing team from the MCG service challenge must face-off in this elimination challenge. The contestants must cook something inspired by the dish that made them fall in love with food.

Culinary goddess Nigella Lawson arrives in the kitchen for a week of challenges and surprises. The lid is lifted on Nigella's mystery box to reveal some of her favourite ingredients.

The bottom three contestants from the previous invention test will face off in this episode's pressure test. The contestants have 75 minutes to complete four of Nigella Lawson's favourite chocolate dishes.

The winning contestant from the mystery box challenge joins the top three contestants from the invention test in this episode's two round immunity challenge.

In a team service challenge, it will be a battle of the brunches, as in two groups of 10, they take over two cafes. Contestants will have real customers, with real orders and real dockets.

The contestants in the losing team are in the kitchen for what will be the last time for one of them. Plus, the first Masterclass of the season with Nigella Lawson.

In one of the biggest surprises of the season so far, and in a program first, Gordon Ramsay enters the kitchen for a mystery box challenge.

With Gordon Week off to a flying start, the bottom three contestants in the invention test roll up to the kitchen ready to cook for their place in the competition with a pressure test.

Our mystery box winner and the top two dishes from the invention test will have the chance to cook for immunity with Gordon Ramsay as their mentor.

The contestants enter the kitchen only to find Gordon Ramsay, who is already yelling at them to hurry up. Divided into two teams, they prepare a three-course meal for 50 diners.

It's the last day of Gordon week. The team who lost the service challenge will have to cook for their lives. The contestants had to recreate a three-Michelin star chicken dish from Restaurant Gordon Ramsay by chef Matt Abé in the two-and a-half hour Pressure Test

Contestants are shopping for their own mystery box ingredients with only $20 and 20 minutes. Maker of the best dish goes through to the immunity challenge, followed by the winners of the invention test.

The losing team from yesterday's invention test are in the kitchen, ready to fight for their place in the competition.

The winner of Sunday night's mystery box, along with the members of the winning team in the invention test relay will compete for a coveted immunity pin.

The judges surprise the contestants by announcing that this episode, a few of them will be journeying to the wide blue yonder.

The eight contestants who lost the previous challenge are cooking in this episode's elimination, with Curtis Stone to keep them company.

It's the beginning of South Australia Week for the contestants, where they will be cooking with some of the best ingredients South Australia has to offer.