Elena Duggan

Contestants compete in the Quarter Final challenge using ingredients chosen by loved ones, cooking off for a place in the Semi Final.

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.

The bottom three from the invention test face the elimination pressure test. Contestants are given just over three hours to recreate UK chef Jason Atherton's quail afternoon tea dish to avoid elimination.

A fast pass for the finals is the prize for four contestants as they cook a variety of grape-based dishes in Napa Valley.

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