The immunity challenge sees four contestants compete in a time auction. The more time they spend on buying ingredients, the less time they have to cook.

MasterChef Australia Season 12 Episodes...

• s12e01 - Series Premiere: Cooking Challenge
• s12e02 - Feature Ingredients
• s12e03 - Relay Challenge
• s12e04 - Immunity Challenge
• s12e05 - Elimination Challenge
• s12e06 - Ultimate BBQ Challenge
• s12e07 - First Pressure Test
• s12e08 - First Mystery Box Challenge
• s12e09 - Immunity Challenge: Judges' Taste Test / MasterClass
• s12e10 - Elimination Challenge Nr 2
• s12e11 - Three Round Cook-Off
• s12e12 - Pressure Test Nr2
• s12e13 - Mystery Box Challenge Nr2
• s12e14 - Curtis Stone's Time Auction Immunity Challenge
• s12e15 - Elimination Challenge Nr3
• s12e16 - Off-site Challenge
• s12e17 - Pressure Test: Guess The Ingredients & Replicate The Dish
• s12e18 - Locally Sourced Mystery Box
• s12e19 - Sushi Train 100 Plate Immunity Challenge
• s12e20 - Take-Away Elimination Challenge
• s12e21 - Double Twists
• s12e22 - Pressure Test: Darren Purchese dish with a twist
• s12e23 - Mystery Box - with a twist!
• s12e24 - Katy Perry Immunity Challenge & Masterclass
• s12e25 - Elimination Cook-Off Challenge
• s12e26 - Sweet or Savoury Service Challenge
• s12e27 - Peter Gunn's Black Box Elimination
• s12e28 - Vegan Mystery Box
• s12e29 - Instant Noodle Immunity Challenge
• s12e30 - Kingfish Elimination Challenge
• s12e31 - Two Dish Relay Challenge
• s12e32 - Kirsten Tibballs' Meljito Dessert Pressure Test
• s12e33 - Family Photo Mystery Box
• s12e34 - Fairytaale Immunity Challenge
• s12e35 - Ice cream Elimination Challenge
• s12e36 - Citrus Challenge
• s12e37 - Coskun Uysal's Meat/Protein Dessert Pressure Test
• s12e38 - Luck Of The Draw Mystery Box
• s12e39 - Highest Score Immunity Challenge
• s12e40 - The Aussie Pressure Test
• s12e41 - Teams Of Two Communication Challenge
• s12e42 - Benjamin Cooper Jungle CurryPressure Test
• s12e43 - Smokin' Mystery Box
• s12e44 - Pumpkin Immunity Challenge
• s12e45 - Atlas Elimination Challenge
• s12e46 - The Golden Mystery Box
• s12e47 - 5 Minute Ingredient Challenge
• s12e48 - Blind Taste Test Elimination
• s12e49 - Use Everything Mystery Box!
• s12e50 - Immunity Challenge
• s12e51 - Elimination Challenge - Top 6
• s12e52 - Colour Inspired Mystery Box
• s12e53 - Cloche Choice Immunity Challenge
• s12e54 - Phil Wood Pressure Test
• s12e55 - Last Chance For Immunity Challenge
• s12e56 - No Rules Challenge
• s12e57 - Mammoth Elimination Challenge
• s12e58 - The Union Jack Mystery Box
• s12e59 - Ordinary or Extraordinary Elimination Challenge
• s12e60 - SemiFinal - Three Becomes Two
• s12e61 - Grand Final

MasterChef Australia Show Summary

MasterChef Australia is an Australian competitive cooking game show based on the original British version of MasterChef. Food critic Matt Preston, chef George Calombaris, and restaurateur and chef Gary Mehigan serve as the show's hosts and judges.