After a trip to Kangaroo Island the contestants get back into the kitchen & discover there is no Mystery Box. Instead they find themselves in an Invention Test with guest chef Heston Blumenthal.
| Title | Invention Test |
|---|---|
| Genres | Reality |
| Release Date | 2012-07-01 |
| Episode Runtime | 01 Hours 15 Minutes |
| Season Number | 4 |
| Episode Number | 49 |
| Production Companies | EndemolShine Australia |
