MasterChef Australia

The judges are joined by special guest Jamie Oliver, as the contestants prepare for a season of secrets and surprises.

Jamie Oliver returns to present the contestants with two difficult challenges: a 15-minute meal and his mushroom and spinach rotolo.

There's a catch to the flavour bombs that Jamie Oliver has left behind for the contestants to cook with. They will only be revealed 15 minutes into the cook and must be included in the dish.

Contestants must create the tastiest dish in 45 minutes using ingredients from Shannon Bennett's fridge. The winner then faces Hugh Allen of Vue de Monde to win an elusive immunity pin.

In the first elimination challenge of the season, the contestants must cook a dish from their favourite childhood memory. The least impressive dish will send its cook home.

Poh Ling Yeow presents the season's first mystery box challenge. The contestants must create a winning dish with basic staples and little other ingredients.

Emelia Jackson, former MasterChef winner and the master of cooking desserts, shares some secret tips with the contestants. To save themselves from elimination, the contestants must make a dish using Emelia's choux pastry recipe.

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.

Contestants must turn Andy's spit-roasted chickens into an incredible dish, with the winner cooking off for an immunity pin against Three Blue Ducks chef Darren Robertson.

Survival is on the menu as Julie Goodwin returns, with those who pick a wrong ingredient in Julie's seafood stew forced to battle it out to avoid elimination using only the items in Julie's recipe.

Living up to its name, the greatest Mystery Box in the history of MasterChef is unveiled during Big Week. To avoid the Pressure Test, competitors must think creatively and play with the flavour to win the round.

Pressure Test elimination looms as three contestants strive to replicate Eddie Stewart's Tokyo Lamington Tower, featuring Snickers, strawberry matcha, charcoal pumpkin and yuzu curd meringue flavours.

Thousands of punters descend on Melbourne's hip Grazeland looking for a feed; two teams vie for a chance at immunity as they face a massive service challenge.

The competitors seek an immunity pin, using a mystery appliance to create a dish for round one. The winner gets first pick of flavour pairings as they face chef Sergio Perera.

The chefs embark on a two-day challenge. On the first day, they have 45 minutes to marinate the base of their dish and develop the flavour. The next day, after 14 hours, they have one hour to finish their dishes.

Contestants try to impress the judges by elevating breakfast cereals into nostalgic classics, with a pressure test awaiting the worst cereal offenders.

Guest chef Donato Toce unveils his delicious Viennetta ice cream cake. The chefs in the stress test must keep their cool to recreate the nostalgic dessert, otherwise they risk having to leave the kitchen.

Two teams try to create a banquet at a suburban Chinese restaurant, seeking a chance at immunity as they present their plates to the judges.

It's time for the immunity challenge. In the first round, every dish must contain a flambéed element. In the second round, someone can win an immunity pin when the chefs compete against French foodie Gabriel Gate.

The contestants take a trip down memory lane with a '70s-themed dinner party, where a little fermented curd does the trick. The culinary time travel leads to a tearful farewell.

The judges announce it's the first day of Home Cooks vs. Pro Cooks Week; each day, three contestants will take on three esteemed professional chefs from around Australia.

Three home chefs compete against the best of the best in a duel with Nick Holloway's Nu Nu crew. The gifted chef of Aru and Sunda Restaurant, Khahn Nguyen, is the creator of this stress test.

Louis Tikaram and his Stanley Restaurant team compete in a blind relay against three contestants, with zero communication and no handovers.

The cooks are challenged with knocking Jock's socks off in an around the clock challenge; three cooks face the chopping block against Serai's flock.