Ben Borsht

The top 24 try to stand the heat in the kitchen, with 90 minutes and an open pantry to cook their dishes and impress the judges, focusing on hospitality.

The three contestants on the bottom after the invention test go head-to-head in a pressure cook off, while Maggie Beer presents their new challenge.

It is the first mystery box challenge, with one contestant choosing eight ingredients for chefs to cook from and make a dish in 75 minutes.

In the Immunity Challenge, contestants make a simple dish using eggs and their choice of pantry items, with the winner competing against the Young Chef of 2018.

Three chefs fight for survival in the first elimination challenge. They are given 75 minutes to cook a dish with ingredients from their home fridge and pantry.

Chefs are teamed-up to cook at the Melbourne Cricket Ground, creating nutritious three-course meals for guests. But there are stumbles and struggles along the way.