Immunity Pin Challenge: Khanh Ong (S18E15)
S18E15
Khanh Ong, the MasterChef alum turned social media sensation, drops by to throw down a wild sandwich challenge. Contestants must craft a daring, over-the-top creation with a jaw-dropping cross-section that steals the show. The prize? The first immunity pin of the season—and a major flex for whoever pulls it off.
Show
MasterChef Australia
Episode
S18E15
Air Date
May 13, 2026
Season 18 Episodes
S18E01
Episode 1
S18E02
Auditions: Group 2
S18E03
Auditions: Second Chance
S18E04
Mystery Box: Jimmy Barnes
S18E05
Episode 5
S18E06
Invention Test: Cereal
S18E07
Pressure Test: Maggie Beer
S18E08
Immunity Challenge: Andy Cooks
S18E09
Elimination Challenge: Reinventing Carbs
S18E10
Team Challenge
S18E11
Elimination Challenge: Family Traditions
S18E12
Mystery Box Challenge: Catherine Zhang
S18E13
Elimination Challenge: Viral Ingredients
S18E14
Team Service Challenge: Viral-worthy Dish
S18E15
Immunity Pin Challenge: Khanh Ong
S18E16
Mystery Box Challenge: Rick Stein
S18E17
Elimination Challenge: Cuisines from Around the World
S18E18
Invention Test: Fusion
S18E19
Pressure Test: Rosheen Kaul
S18E20
Mystery Box Challenge: Dim Sim Lim
S18E21
Elimination Challenge: Heritage
S18E22
Team Challenge: Team Relay
S18E23
Immunity Pin Challenge: French Techniques
S18E24
Mystery box Challenge: Matt Sinclair & Daniel Dobra
S18E25
Classic Pairs Elimination Challenge
S18E26
Invention Test: Reese's Peanut Butter Cup
S18E27
Elimination Challenge: Time or Ingredients?
S18E28
Mystery box Challenge: Curtis Stone
S18E29
Episode 29
S18E30
Comeback Challenge
S18E31
Elimination Challenge: Aussie Native Ingredients
S18E32
Mystery Box Challenge: Adriano Zumbo
S18E33
Episode 33
S18E34
Episode 34