This challenge is all about the pub lunch. The contestants are split into two teams and must cook three courses for 70 people with Marco Pierre White running the pass.
The top three contestants from the invention test must make a filled pasta with a matching sauce. The winner will enter a cook off for immunity against guest chef, Jake Kellie.
It takes 20 ovens, miles of stainless steel, an arsenal of appliances and knives that chop, cut, slice and dice, to discover the best amateur chef in Australia.
This mystery box challenge has been chosen by the viewers. Contestants have 75 minutes to create a dish using at least one ingredient chosen by the viewers.
2015's Masterchef, Billie McKay, picks the ingredients of the First Mystery Box.
