He is an award-winning professional chef with years of experience under his belt. 

But Lachlan Colwill from Hentley Farm made a rookie mistake and melted under the pressure when he went head-to-head with contestant Harry Foster on Tuesday’s episode of .

In an attempt to cool down his chocolate for his dessert, he spread it out on a surface – without realising it was actually a piping hot oven.

He only picked up on his mistake when one of the watching contestants pointed it out, saying: ‘You’ve got the oven underneath on high.’

Clearly a little flustered, pinbahis Lachlan said: ‘Oh, what a fool! Why did I put it there?’

‘Realising that I’ve put it on a bench that has a 180-degree oven underneath – oh, Chef 101.

‘I need to get the chocolate off the bench, get it into a cooler area on the bench away from this oven, and hopefully it will set in time. Foolish, foolish.’

Chloe Bowles voiced her concern, saying: ‘He put it on the bench above the oven. I’m really concerned that later on it’s not going to set.’

Lachlan was then forced to scrape his chocolate off from the top of the oven and work them into cigar shapes for his Australian summer Christmas pudding.

‘Looking at my chocolate, I’m still pretty nervous that me having to move it from the hot bench to the cold bench has destroyed the goodness in the chocolate,’ Lachlan said,

‘I’m scraping away at my chocolate. The cigars seem to be working. I head back over to the blast freezer. It’s crunch time for the ice-cream. 

‘This is my entire dessert. If the ice-cream doesn’t work, I’m really sitting with a little bit of tempered chocolate and some berries, which I don’t think is gonna get me over the line.’

Despite the mistake, Lachlan still won the challenge by one point – meaning that Harry lost out on an immunity pin.

After winning, he said: ‘I’m pretty inspired meeting these guys that are potentially entering the industry, and they’ve already got such good understanding and good skill base. 

‘I’m totally stoked that I won. I felt the challenge. I felt the pinch. And I’m kind of happy about that – I go home with my head held high.’

Earlier in the episode Harry beat Karmen Lu and Mimi Baines in a challenge to cook Nigella Lawson a midnight snack.

The domestic goddess lost her cool and was seen yelling at Harry to ‘move faster’ with his dark chocolate ‘brookies’.

Looking uncharacteristically flustered, she said: ‘Harry, just move fast. I’m worried’.

‘Harry, some urgency. Harry, you’re panicking me. You’re going too slow. Just do something with it.’

With a look of panic plastered across his face, Harry replied, saying: ‘I’m thinking’.

Nigella then said: ‘You haven’t got time to think too much. You’re panicking me. You’ve got to get it on a plate.’

She later jokingly told him that she almost came and hit him ‘over the head with one of those pans’.