Brett Carter

An underground carpark becomes a den of decadence and chocolatey desserts on day three of Heston Week.

In the final pop-up challenge, the remaining chefs are assigned a history-theme when they must put a twist on an ancient recipe.

The top contestants open four Heston Blumenthal-inspired and supervised pop-up restaurants in four days; begin with galaxy-inspired dishes in a revolving restaurant.

Contestants have 75 minutes to create a delicious dish based on Nigella Lawson's divine indulgences. The top three will have a chance at immunity, while the bottom three face elimination.

Split into groups, each team is tasked with making two dishes for an outdoor cinema event, but timing proves to be a problem.

After being split into teams, the contestants cook a three-course meal for 30 guests from two Melbourne restaurants.