Yep, This Was Definitely The Toughest 'MasterChef' Challenge Yet

Technical dessert skills are one thing -- but could you recreate an iconic dessert without a recipe?

We thought that Clare Smyth's pear and lemon verbena vacherin four-hour pressure test was tricky enough, but at least that came with some detailed guidelines.

And last week's recipe-less paella pressure test? A snap compared to this psychological nightmare.

Contestants Tim, Larissa, Steph and Ben were tasked with re-creating a dessert that definitely required some kind of postgraduate chemistry degree to assemble -- the Passion de Chocolate.

The Passion de Chocolate. Photo: Network 10.

The dessert can be found on the menu at Brisbane's Montrachet and should not be attempted by the faint of heart.

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The recipe involves having access to some kind of spray tanning chamber, except, instead of fake tan, you fill a pressurised gun with cocoa -- easy, right?

You also have to temper chocolate around what looks like a piece of spare plumbing.

Then, if you weren't stressed enough, you have to forage for these tiny micro herbs to decorate the plate -- a nightmare!

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The contestants who landed in the bottom four after Sunday's food truck challenge had to remember precise quantities and ratios for ingredients like dextrose and stabilising agents after a quick run through from chef and dessert mastermind Shannon Kellam.

Unfortunately, the diabolical dessert sent competition favourite Tim Bone home and we'd like to agree that THIS IS NOT FAIR.

MasterChef Australia airs Sunday to Thursday nights at 7.30pm. Only On 10 And WIN Network. Missed an episode? Catch up on 10 Play or 10 All Access!

Main Photo: Network 10.