The highly anticipated cooking show is back for an incredible 12th season, with a tasty new recipe - and cooking legend Gordon Ramsay will be in the kitchen the ENTIRE first week!Returning to the MasterChef kitchen are 24 much-loved and respected former contestants, Although these familiar faces from the past 11 seasons have forged incredible careers in the food industry, they all have some unfinished business - they are back to win.

Each team must cook a three-course meal for 120 guests. The judges reveal three ingredients: black garlic, ginger and potatoes. Each team must feature one of the ingredients in each course.

Teams must cook a three-course meal in a relay style cook. Each team member starts a course and after 20 minutes must swap to the next course. The most cohesive menu with the best dishes wins.

After impressing the judges in the round robin relay challenge, the winning team are back in the kitchen cooking for immunity and a chance to be safe from the next elimination.

Every contestant is up for elimination, except the winner of the immunity challenge. The pressure mounts for all contestants to deliver delicious dishes and keep their place in the competition.

The contestants compete in the ultimate barbecue challenge, cooking for a staggering 1200 people. The team who least impresses will find themselves cooking in the pressure test.

In the first pressure test of the season, contestants must cook three dishes from judge Jock Zonfrillo's three-hatted, award-winning restaurant, Orana. The least impressive dish will send someone home.

In the first mystery box challenge of the season, the 22 remaining contestants discover the ingredients have been chosen from all corners of the globe, by judge Melissa Leong.

The five contestants with the most impressive dishes from yesterday's challenge find themselves back in the kitchen ready to cook off in an immunity challenge. Plus, MasterClass with Andy and Jock.

In this episode's elimination challenge, every contestant bar one, the winner of the immunity challenge, is up for elimination. The contestant with the least impressive dish will be going home.

The contestants are split into three teams of seven and compete in a three-round cook-off. After the third round, the bottom six contestants are revealed and will cook off in the next episode's pressure test.

It's a pressure test with a difference. Each contestant has written their own pressure test recipe and has to create a dish to wow the judges. The least impressive dish will send its maker home.

The judges reveal that each contestant's mystery box contains four ingredients which they can barter with one another for. The top four dishes will see their makers cook for immunity in the next episode.

Today's immunity challenge with Curtis Stone sees four contestants compete in a MasterChef time auction. The more time they spend on buying ingredients, the less time they have to cook.

This challenge is all about texture. In round one, contestants must cook a dish with the best crunch. Round two is all about a gooey texture. The least impressive gooey dish will send its chef home.

The contestants leave the kitchen for a week of off-site challenges. Teams must make two entrees and three mains for 50 diners. The least impressive team faces a pressure test.

Helly Raichura, of Enter Via Laundry, bases this taste test on her popular dish, 'pasta not pasta'. Contestants who guess the least ingredients correctly must replicate the dish in a challenge.

This episode's ingredients are sourced by locals who grow fruit and vegetables in their backyards. The three most impressive dishes from the mystery box challenge will cook in an immunity challenge.

Three contestants are told they must prepare 100 small plates each, consisting of five different dishes. All dishes will be served on the sushi train and will be colour-coded in this blind tasting.

In today's take-away elimination challenge contestants must make a dish that will stand the home delivery test. Contestants have 90 minutes from the start of the cook to completed delivery.

Contestants learn that there will be a twist with every challenge this week, so they must think on their feet to survive another week in the MasterChef kitchen. Tonight two twists really stir the pot.

Contestants have three hours to complete a simply stunning Darren Purchese dish, but in the final hour of the cook, a twist that no one could anticipate is thrown at the contestants.

Contestants have 75 minutes to cook a dish using one or more of the eight ingredients in the mystery box. The contestants are pushed to the limit when a twist is delivered to their benches.

Katy Perry guest judges a very special Hot 'N' Cold challenge to honour the iconic MasterChef theme song. The contestant with the best dish will find themselves safe from the elimination.

Contestants are cooking off against the other contestant on their bench. The best dish from each bench will be safe, while the remaining contestants must cook in the elimination round.

Jo Barrett and Matt Stone from Oakridge Wines mentor this service challenge, with each team cooking a sweet or savoury menu. The team with the least impressive menu faces the pressure test.

Contestants must replicate chef Peter Gunn's 'Black Box' from his restaurant Ides. The contestant with the least impressive dish will be going home.

Contestants must create a vegan dish using at least one ingredient from the mystery box set by vegan chef Shannon Martinez. The top four dishes will cook off in the next immunity challenge.

This episode's immunity challenge is fought in two rounds. In one round, contestants must create a delicious dish using instant noodles. The top two from round one must make a nostalgic and comforting dish.

Josh Niland of The Fish Butchery breaks down a kingfish for each of the contestants to choose a cut to cook with. The contestant with the least impressive dish will be going home.