Ben Trobbiani

Each cook gets one hour to make a dish. Those who impress all three judges will go on to the next audition. The cooks who impress only two judges will have to cook again.

The contest moves to Queensland and a mystery box challenge featuring local ingredients including coconut, blue swimmer crab, peanuts, quail eggs, lychees, oysters and pork belly.

The contestants take over the menu of a train running from Queenscliff to Drysdale, preparing a four-course vegetarian menu for 30 before boarding the train to serve 30 passengers.

The cooks take on a street food challenge, split into three teams to serve different cuisines - Malaysian, Indian and Mexican - and preparing enough food for at least 120 people.

Four hopefuls compete in an immunity challenge - and for the first round, the judges give them their secret sauces, asking them to choose one and make a dish that goes with it perfectly.

The amateur cooks are introduced to Secrets Week, throughout which a secret will be revealed every day, whether it be a secret ingredient, recipe, technique or even a secret chef.