Brent Draper

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

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.

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.

Jamie Oliver returns for another day in the kitchen, as contestants battle to secure a place in the first immunity challenge.

Maggie Beer visits the kitchen to inspire the contestants as they prepare to battle it out in a two-round Elimination Challenge.

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.