It's Day Two in the MasterChef Kitchen and already the 22 contestants are thrown into their first big Service Challenge, with Jamie Oliver running the kitchen.

It's a new era for MasterChef Australia as Andy Allen welcomes three new judges: Sofia Levin, Poh Ling Yeow and Jean-Christophe Novelli, plus guest judge Jamie Oliver. The contestants were tasked to create a dish that represents them. The winner will win the only immunity pin of the season and a trip to London to work at Jamie Oliver's latest restaurant for a week.

Before our contestants can cook for immunity, they must get through Sofia's 'wrap your hands around this' challenge.

The first immunity challenge and it's a battle of time vs. ingredients. Five contestants must choose between one ingredient and a 90-minute cook, OR up to 20 ingredients but only 45 minutes to cook.

The first elimination of the season tasks the cooks with 75 minutes on the clock to create a dish representing their food dream.

Our cooks are set for the challenge of making a dish from Mystery Box ingredients chosen by Jamie Oliver's parents, with the four weakest dishes set to send their makers into tomorrow's elimination.

In this elimination cook the contestants are challenged to 'Keeping Up With Jamie' on an Oliver Family recipe in order to keep their place in the competition.

The contestants cook for Immunity in a Team Challenge at the iconic Queen Victoria Night Market.

Andy's mum Maree is in the kitchen to set an elimination challenge inspired by some of the Allen household's classic retro dishes. Contestants must make them MasterChef worthy, or risk going home.

Today's Mystery Box comes with a twist, as our four judges throw in a secret ingredient that our cooks will have to wrangle.

Judge Jean-Christophe Novelli sets the first Pressure Test of the competition with his 1992 dessert, 'Jack in the Box'.

In Round 1, one 'champion' per team cooks, with the winner of Round 1 then taking their teammates into Round 2, and out into the garden to cook for Immunity.

In today's two round elimination, our contestants' palettes are challenged with the classic One-inch cube taste test, which sees six favorites, cook for their spot in the competition.

A French-themed Mystery Box in Bendigo, regional Victoria, challenges the contestants to create 'magnifique' dishes.

Nat, Gillian, Alex and Lourdes battle it out in a Pressure Test set by Chef Liam Downes at Black Cat Truffles just outside Ballarat.

It's the chaotic, colourful and feared race that is the MasterChef Team Relay! Today, in teams of four, cooks will tag-team their way to hopefully plate a cohesive dish and win immunity.

The three losing teams faced a two-round elimination challenge set by Luke Nguyen. In round one each contestant was assigned a pair of ingredients, one visible and the other hidden underneath a cloche, and 75 minutes to cook a dish with the ingredient of their choosing.

All of the contestants competed in a mystery box challenge set by guest judge, chef and social media presenter Vincent Yeow Lim, who asked them to create a dish in 75 minutes using a wok.

The bottom four contestants were given three hours to re-create chef Anna Polyviou's sunny side up dessert.

The judges task our contestants to create an immunity worthy dish in 75 minutes, using one of their four microwave hacks.

Inspired by a visit from viral sensation Mikiko Terasaki, contestants must creatively use eggs in a dish to avoid elimination.

A mystery box challenge with a saucy twist. The cooks must use at least one of six Asian sauces to cook a showstopping dish, with the bottom four headed for tomorrow's pressure test.

MasterChef legend Darren Purchese returns with another diabolical dessert, which will spell the end of the competition for one talented cook.

Eight eliminated contestants return for the chance to cook their way back into the competition.

King of the sea, Rick Stein is here, and the contestants are excited cooking for such an icon. Over two rounds, seafood is on the menu but for one cook, it will be their last time in the kitchen.