This episode's Pressure Test has contestants recreating a dessert from culinary legend Clare Smyth. During four hours of preparation time, there are tears and even a dish that collapses before the judges' eyes.

These immunity rounds involve sauce, secrets and citrus. A contestant will face off against an established chef that will be kept secret from everyone, including the judges, until the very end.

This episode’s mystery box involves some deja vu and later, in the invention test, contestants have 60 minutes to create a dish that takes the judges to a moment in time that evokes a particular memory.

It's the end of the first week in the kitchen and the winners from the previous challenge will cook for an immunity pin. But it won't be easy: they'll be cooking against chef Curtis Stone.

It's mystery box time and our cooks must create a delicious dish using at least one of the elected ingredients. Next up is the black mystery box, but this time, whoever cooks the worst dish is going home.

Before each cook sits their favourite and least favourite ingredients. Round one: cook with either. But those that produce the bottom four dishes face round two with their remaining ingredient. Followed by a Masterclass with Billie, Poh and Matt

It's Nigella Week. MasterChef favourite Nigella Lawson sets the mystery box ingredients. Whoever cooks the best dish heads into immunity, but the rest must compete in a relay invention test.

It's pressure test time for the losing team from the previous challenge. The contestants have 90 minutes to cook Nigella's infamous roast chicken with two sides and gravy. Who will fail to impress and be sent home?

Nigella and contestants are given historical recipes at the State Library of Victoria to inspire a three-course meal. The team who create the least impressive menu will head into the next elimination.

The three winners of the challenges must create a dish featuring Beluga caviar. The best dish will see its maker compete for an immunity pin against Pt Leo Estate chef Phil Wood.

The contestants must cook a four-course meal for the Best Diners In The World while showcasing the Best Ingredients In The Country. Little do they know, the diners are their loved ones.

The pantry is open, there's 75 minutes on the clock, and the contestants are asked to cook the dish they'd cook every day for the rest of their lives if they found themselves on a desert island.

Those that failed to impress in the previous episode are facing the dreaded pressure test. Our cooks are charged with recreating a Darren Purchese dessert, and whoever doesn't impress the judges will be going home.

Nigella week continues, and the four best cooks from her Mystery Box challenge must cook a dish that celebrates custard. The top contestant will compete against Coskun Uysal, of renowned Tulum restaurant.

The remaining contestants fly to Western Australia for a mystery box challenge and later an invention test, using all the great produce WA has to offer.

The winners of the mystery box and invention test face the immunity challenge. History is made when the judges choose who will cook against Young Chef of the Year, Max Sharrad.

It's Legends Week and our cooks have to create a dish using Rick Stein's Mystery Box. Later, a fish and potatoes themed Invention Test determines who will face the Immunity Challenge and Pressure Test.

Contestants cook outside of the kitchen for the first time. Their challenge is to create a feast for volunteers, truckies, farmers and their families impacted by drought in Briagolong.

The bottom team from the previous challenge are presented with an array of condiments they must identify correctly. The first five to guess incorrectly head into an elimination cook. Plus, a Masterclass with Nigella.

Matt Sinclair mentors the Immunity cook which uses only equipment from a typical office kitchen. Best dish enters Round 2, where they will compete against culinary legend Donovan Cooke.

Three contestants face a pressure test and will cook a paella based on an award-winning dish by Leno Lattarulo from Melbourne's Simply Spanish. Simple, right? Wrong. It is Secrets Week, after all.

This episode's mystery box challenge has contestants creating dishes using Queensland's finest ingredients. The judges will taste the five most appealing dishes and the winner will head into an immunity challenge.

Three contestants will face the chopping block in an elimination challenge with a surprise twist.

It's day two of auditions and 13 contestants return for a second chance to show the judges they deserve to be in the top 24. With 18 aprons given away yesterday, just six aprons are up for grabs.

Joined by Yotam Ottolenghi, our contestants are cooking street food for 360 people. Each team must hero a different cuisine, and the least impressive team will be sent into the next elimination.