Big Week lives up to its name as the contents of MasterChef's biggest ever Mystery Box are revealed. Contestants must think outside the box and big up the flavour to avoid tomorrow's Pressure Test.

MasterChef Australia Season 15 Episodes...

• s15e01 - Secrets & Surprises with Jamie Oliver
• s15e02 - Jamie Oliver's Back!
• s15e03 - Jamie Oliver Flavour Bombs
• s15e04 - Hugh Allen: Immunity Pin Challenge
• s15e05 - Favourite Childhood memories - Elimination Challenge
• s15e06 - Poh Ling Yeow - Mystery Box Challenge
• s15e07 - Emilia Shares Her Secrets - Elimination Challenge
• s15e08 - 1st Service Challenge
• s15e09 - Winner Winner Chicken Dinner! - Immunity Pin Challenge
• s15e10 - Julie Goodwin - Wrong Ingredient - Elimination Challenge
• s15e11 - Big Week - Mystery Box Challenge
• s15e12 - Tokyo Lamington Tower - Pressure Test
• s15e13 - Grazeland - Service Challenge
• s15e14 - Mystery Appliance - Immunity Pin Challenge
• s15e15 - 2 Day Elimination - Elimination Challenge
• s15e16 - Breakfast Cereals - Mystery Box Challenge
• s15e17 - Viennetta Ice Cream Cake - Pressure Test
• s15e18 - Sweet... .Or Sour? - Service Challenge
• s15e19 - Gabriel Gate - Immunity Challenge
• s15e20 - Trip Down Memory Lane - Elimination Challenge
• s15e21 - Home Cooks vs Pro Cooks - Mystery Box Challenge
• s15e22 - Best Of The Best - Pressure Test
• s15e23 - Louis Tikaram Blind Relay - Service Challenge
• s15e24 - Shock Rock Around The Clock - Immunity Challenge
• s15e25 - Rick Stein - Elimination Challenge
• s15e26 - John Dory - Mystery Box Challenge
• s15e27 - Luke Nguyen - Pressure Test
• s15e28 - Two Course Root Veg - Service Challenge
• s15e29 - Condiment Cook-off - Immunity Challenge
• s15e30 - Ingredient Gamble - Elimination Challenge
• s15e31 - Surprise Inside - Mystery Box Challenge
• s15e32 - Peter Rabbit Garden - Pressure Test
• s15e33 - NGV Greek - Service Challenge
• s15e34 - Beat The Chef - Immunity Challenge
• s15e35 - Colours - Elimination Challenge
• s15e36 - Everything Box - Mystery Box Challenge
• s15e37 - Clare Smith Pie - Pressure Test
• s15e38 - Foraging - Service Challenge
• s15e39 - Aural Pleasure - Immunity Challenge
• s15e40 - Kirsten Tibballs - Elimination Challenge
• s15e41 - Freshness - Mystery Box Challenge
• s15e42 - Time Auction - Pressure Test
• s15e43 - Fiesta - Pressure Test
• s15e44 - Stick Shed - Service Challenge
• s15e45 - Anchovies & Dijon Mustard - Elimination Challenge
• s15e46 - Tear-jerker - Mystery Box Challenge
• s15e47 - Peter Gilmore - Elimination Challenge
• s15e48 - Curtis Stone - Finals Advantage
• s15e49 - Final 3 - Service Challenge
• s15e50 - Grand Finale

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.