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.

The contestants find themselves at the incredible D'Arenberg Cube restaurant in the heart of McLaren Vale wine country, with the bottom two teams from the night market challenge facing elimination.

This immunity challenge takes place at the stunning Mt Lofty House in the Adelaide Hills. Does our contestant have what it takes to outscore the chef and win immunity?

The team challenge will take place in the Barossa Valley. Divided into two teams, contestants will be given two hours to prepare an entree, main and dessert with each course celebrating table grapes.

For the elimination challenge, the contestants go to Maggie Beer's Eatery in the Barossa Valley. Plus, a masterclass takes place at the Adelaide Markets.

The contestants arrive back at the kitchen after a week of adventure in South Australia. There is a lot at stake, knowing that the top 10 is just around the corner.

The bottom three contestants from the invention test are facing elimination.

The winner of the mystery box and the top three from the invention test have the chance to cook for immunity.

The contestants find themselves in the Dandenong Ranges where a fiery team challenge awaits them. To cook a three-course meal, all they have to use is fire.

The losing team from the previous challenge arrive at the kitchen for what will be the last time for one of them.

The judges reveal this is Sweet Week. To kick off the week, they introduce the master of sweets, Adriano Zumbo, who has selected the mystery box ingredients and will reveal the invention test.

Continuing Sweet Week, the judges are joined by social media cake superstar Katherine Sabbath. The bottom two teams from the previous invention test will face off in a pressure test.

Our two Sweet Week mystery box winners and the winning team from Zumbo’s invention test compete for immunity over two rounds

George pays a surprise visit to the Masterchef contestant house with a special guest. Together, they reveal the challenge.

The losing team from the previous challenge will fight for their place in the competition.

For the mystery box challenge the contestants find a big surprise among their ingredients. Later, the invention test is a chance for the contestants to prove they deserve to be in the top 10.

The bottom three contestants from the invention test face elimination in a pressure test.

The mystery box winner and the top three contestants from the invention test compete for immunity.

The contestants receive a surprise message in the MasterChef house which informs them of their next group challenge and where they'll be travelling to.

Continuing their adventure, the contestants arrive at their next destination. The two losing teams from the previous challenge face elimination in this challenge.

This week the judges have a surprise - it's survival week and the contestants will be cooking for their lives every day. By the end of the week one of them will win the most powerful advantage.

As survival week continues, the contestants are shocked to discover that another challenge may lead to elimination. Tonight, they have to turn a tray of terror in to a modern masterpiece.

The contestants remaining in survival week will learn all about making decisions under pressure as they decide what is of more value to them: time or ingredients.

The challenge is off site at Panama Dining Room, in Melbourne's inner-city suburb of Fitzroy. The contestants will be cooking a main course and dessert for 25 people each.

This is no ordinary elimination, but a pressure test with an iconic dish. How will the contestants cope with this massive challenge? Plus, join us for a masterclass

Our 7 remaining contestants are in the MasterChef kitchen ready to fight for their place with a big surprise awaiting them. What will the contestants be challenged with for tonight's invention test?

The bottom three contestants from the invention test face elimination. Which of our contestants will be able to save their place in the competition with a pressure test like no other?

The winner of the mystery box and of the invention test will face off in round one, vying for the chance to cook off against a professional cook in round two to get fast tracked to Finals Week.

This episode is all about raising money for Second Bite, a charity that the program supports. The contestants will cook using only ingredients donated by the charity, cooking a six-course degustation.

This is the final elimination before Finals Week, and will determine the top five for 2018. It's an elimination over three rounds. Plus, a MasterClass with Curtis Stone.

Today marks the first day of Finals Week for 2018. Each contestant will cook with one of five mystery boxes from a past season - who will be make it through to the next challenge?

It’s the first pressure test of finals week and the bottom three contestants from the previous invention test line up for what will be the last time in the MasterChef kitchen for one of them.

We are down to the top four in the competition and they will compete for a massive advantage. Just days from the grand finale, this advantage will be a game changer.

The contestants arrive in Sydney at the iconic Icebergs restaurant in Bondi. They are competing for a place in the semifinal and need to be inspired by the Italian menu at Icebergs.

It is the semifinal of 2018. Our top three contestants are told that they will be cooking for some very special guests.

It’s the grand finale of 2018 and our top 24 has been whittled down to two home cooks battling it out in one final day in the kitchen.