The winner of this week's Heston Mega Invention Test, gets the added reward of competing in an immunity challenge. Up against the winning contestant is a 1-hat chef Tomislav Martinovic.

MasterChef Australia Season 4 Episodes...

• s04e01 - The Journey Continues
• s04e02 - Top 50 Mystery Box
• s04e03 - Mornington Peninsula Farms
• s04e04 - Knife Skills
• s04e05 - Sweet Pressure Test
• s04e06 - Masterclass
• s04e07 - French Pressure Test
• s04e08 - Mystery Box
• s04e09 - Beat the Chef!
• s04e10 - Restaurant Team Challenge
• s04e11 - Pasta Elimination
• s04e12 - Masterclass
• s04e13 - Mystery and Invention
• s04e14 - Pressure Test
• s04e15 - Immunity Challenge
• s04e16 - Yum Cha Team Challenge
• s04e17 - Elimination Challenge
• s04e18 - Masterclass
• s04e19 - Biscuit Mystery Box
• s04e20 - Pressure Test
• s04e21 - Raw Food Immunity Challenge
• s04e22 - Leftover Team Challenge
• s04e23 - Poultry Elimination
• s04e24 - MasterClass
• s04e25 - Flavour Matching Mysterybox
• s04e26 - Market Stall Competition
• s04e27 - Fishing Boat Salmon Challenge
• s04e28 - Tea for 100 Team Challenge
• s04e29 - Knockout Round Elimination
• s04e30 - MasterClass
• s04e31 - Mystery and Invention
• s04e32 - Pressure Test
• s04e33 - Immunity Challenge
• s04e34 - 24 Hour Cooking Challenge
• s04e35 - Rapid Fire Pressure Test
• s04e36 - Masterclass
• s04e37 - Superstar Mystery Box
• s04e38 - Pressure Test
• s04e39 - Immunity Challenge
• s04e40 - Wedding Challenge
• s04e41 - Elimination Challenge
• s04e42 - Masterclass
• s04e43 - Mystery Box Challenge
• s04e44 - Elimination Challenge
• s04e45 - Immunity Challenge
• s04e46 - Team Challenge
• s04e47 - Elimination Challenge
• s04e48 - Masterclass
• s04e49 - Invention Test
• s04e50 - Pressure Test
• s04e51 - Immunity Challenge
• s04e52 - Pop Up Restaurant Challenge
• s04e53 - Double Elimination Challenge
• s04e54 - Masterclass
• s04e55 - Roman Dish Challenge
• s04e56 - Super-Sized Challenge
• s04e57 - Immunity Challenge
• s04e58 - Risotto Challenge
• s04e59 - Elimination Challenge
• s04e60 - Masterclass
• s04e61 - Mystery Fridge Challenge
• s04e62 - Pressure Test
• s04e63 - Elimination Challenge
• s04e64 - Mini Challenge
• s04e65 - Family Team Challenge
• s04e66 - Masterclass
• s04e67 - Lunch Service
• s04e68 - The Perfect Steak Sauce
• s04e69 - Recreate Signature Dish
• s04e70 - 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.