The remaining 21 contestants return to the MasterChef kitchen to compete in a biscuit inspired Mystery Box challenge. Later it's an Invention Test Mexican style. Cactus anyone?
| Title | Biscuit Mystery Box |
|---|---|
| Genres | Reality |
| Release Date | 2012-05-27 |
| Episode Runtime | 01 Hours 15 Minutes |
| Season Number | 4 |
| Episode Number | 19 |
| Production Companies | EndemolShine Australia |
