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MasterChef Australia
Season 18 · Episode 12
Mystery Box Challenge: Catherine Zhang
0.059mMay 10, 2026
The Top 20 compete for Immunity from tomorrow's Elimination in a fruity Mystery Box challenge set by Catherine Zhang, marking the start of Viral Wonders Week
Episodes
- Episode 1Auditions: Group 1
- Episode 2Auditions: Group 2
- Episode 3Auditions: Second Chance
- Episode 4Mystery Box: Jimmy Barnes
- Episode 5Elimination Challenge: Family Favourites
- Episode 6Invention Test: Cereal
- Episode 7Pressure Test: Maggie Beer
- Episode 8Immunity Challenge: Andy Cooks
- Episode 9Elimination Challenge: Reinventing Carbs
- Episode 10Team Challenge: Family Feast
- Episode 11Elimination Challenge: Family Traditions
- Episode 12Mystery Box Challenge: Catherine Zhang
- Episode 13Elimination Challenge: Viral Ingredients
- Episode 14Team Service Challenge: Viral-worthy Dish
- Episode 15Immunity Pin Challenge: Khanh Ong
- Episode 16Mystery Box Challenge: Rick Stein
- Episode 17Elimination Challenge: Cuisines from Around the World
- Episode 18Invention Test: Fusion
- Episode 19Pressure Test: Rosheen Kaul
- Episode 20Mystery Box Challenge: Dim Sim Lim
- Episode 21Elimination Challenge: Heritage
- Episode 22Team Challenge: Team Relay
- Episode 23Immunity Pin Challenge: French Techniques
- Episode 24Mystery Box Challenge: Matt Sinclair & Daniel Dobra
- Episode 25Classic Pairs Elimination Challenge
- Episode 26Invention Test: Reese's Peanut Butter Cup
- Episode 27Elimination Challenge: Time or Ingredients?
- Episode 28Mystery Box Challenge: Curtis Stone
- Episode 29Elimination Challenge: Pork
- Episode 30Comeback Challenge
- Episode 31Elimination Challenge: Aussie Native Ingredients
- Episode 32Mystery Box Challenge: Adriano Zumbo
- Episode 33Elimination Challenge: Ice Cream Taste Test
- Episode 34Invention Test: Air Fryer
- Episode 35Immunity Pin Challenge: Beat the Chef
- Episode 36Skills Challenge: Fish Butchery
- Episode 37Elimination Challenge: Flat Iron Steak
- Episode 38Immunity Challenge: Tom Sarafian
- Episode 39Pressure Test: Kirsten Tibballs
- Episode 40Twins Challenge
- Episode 41Mystery Box Challenge: The Judge's Fridge
- Episode 42Team Challenge: Fine Dining
- Episode 43Elimination Challenge: Ingredient Choice
- Episode 44Mystery Box Challenge: Sanjeev Kapoor
- Episode 45Elimination Challenge: International Ingredients
- Episode 46Immunity Challenge: Ice Cream Flavours
- Episode 47Pressure Test: Sam Aisbett
- Episode 48Mystery Box Challenge: Marion Grasby
- Episode 49Elimination Challenge: Hot New Chilli Dish
- Episode 50Immunity Challenge: Hibachi
- Episode 51Elimination Challenge: Head-to-Head Duels
- Episode 52Mystery Box Challenge: One Ingredient
- Episode 53Elimination Challenge: French Sauces
- Episode 54Immunity Challenge: Keeping Up With Andy
- Episode 55Pressure Test: Malaysian Snacks
- Episode 56Immunity Challenge: Meghan Markle
- Episode 57Elimination Challenge: Letters From Home
- Episode 58Judges vs. Contestants
- Episode 59Semi Final: Two-course Service Challenge
- Episode 60Grand Finale